疫情的来袭让不少人不敢在飞机上吃东西，改为在乘机前进食。专家指出，乘机前不可以乱吃东西，不然后果非常紧急。来看看什么食物上了黑名单。
Eating on a plane used to be common practice. But in the age of COVID-19, many passengers are understandably less inclined to remove their masks to take a mid-flight bite ― or to even have a snack at the airport.
过去在飞机上吃东西非常正常。但在新冠肺炎疫情期间，很多乘客都不愿在飞行途中摘下口罩进食，甚至不愿在机场吃零食，这也是可以理解的。
As a result, its more common to eat at home before embarking1 on a flight. Those with longer travel journeys may even eat a large meal to carry them through the day. Still, not all preflight eats are created equal.
因此目前大家一般在家吃完东西再去乘机。长途旅客甚至会大吃一顿，如此一整天都不会饿。不过，不要以为乘机前吃那些都一样。
Tracy Lockwood Beckerman, a registered dietitian2 based in New York City, said its worth considering your overall health as you prep for travel, including what you eat and drink.
纽约市注册营养师特蕾西洛克伍德贝克曼说，在为乘机旅游做筹备，包含摄入饮食的时候，应该考虑我们的整体健康情况。
Immune systems are tested, digestive systems are thrown off and hydration takes a hit, Beckerman said. Thats why its so important to eat foods that will keep your immune system strong, keep you hydrated and are easily digested before flying.
贝克曼说：免疫系统会遭到考验，消化功能会衰退，还会出现水分流失。这就是为何飞行前摄入一些可以增强免疫系统、补充水分并且好消化的食物非常重要。
So, which foods are best avoided on a day when youre traveling by plane?
那样在乘机旅游前最好防止摄入什么食物呢？
高钠食物
Its super common for dehydration3 to set in when flying, thanks to the lack of humidity and dry air in the cabin, Beckerman said. Thats why its not the smartest to have a sodium4-laden meal the day before or morning of your flight.
贝克曼说：因为机舱内湿度不够、空气干燥，在坐飞机时感到缺水非常容易见到。因此在坐飞机前一天或当天早上吃高钠食物并非明智之举。
Beckerman advised going easy on the salt shaker, opting5 for snacks without added salt and consuming more fresh foods to avoid dehydration-related headaches, constipation and fatigue6.
贝克曼建议降低盐的摄入，选择一些不添加盐的零食，多吃新鲜食物，以防止缺水引发的头痛、便秘和疲劳。
碳酸饮料
Because flying may cause some folks to feel bloated or extra gassy, thanks to the changes in cabin pressure, its wise to avoid anything with carbonation beforehand, like seltzers, sodas7 or kombucha, Beckerman said.
贝克曼说：由于机舱内充气压力的变化，飞行途中有的人或许会出现水肿或胀气，因此在飞行前不要喝气泡矿泉水、苏打水或甜汽水等碳酸饮料。
She noted8 that these bubbly beverages9 can worsen digestive air pockets, causing you to feel extra belchy, bloated or gassy during your flight.
她指出，这类气泡饮料会加重胃胀气，叫你在飞行途中特别想打嗝、放屁或感觉肚子非常胀。
酒
Alcohol consumption tends to cause dehydration and has a different effect on the body than if you were to have a drink at ground level due to the low barometric10 pressure in the cabin and the low oxygen concentration in blood, Jonathan Valdez, media spokesperson for the New York State Academy of Nutrition and Dietetics11, said. Therefore you are more likely to get inebriated12 faster and urinate frequently.
纽约州营养和饮食掌握的媒体发言人乔纳森瓦尔迪兹说：饮酒总是会致使脱水，而且与在地面上饮酒相比，因为机舱内充气压力低，血液中氧气浓度减少，在飞机上饮酒对身领会产生不一样的影响。你会更容易喝醉，而且会频繁地上卫生间。
容易胀气的食物
Certain foods such as onions, asparagus, beans, cabbage, cauliflower and Brussels sprouts13 can contribute to intestinal14 gas and bloating because we do not have the necessary enzymes15 to digest certain carbohydrates16 known as FODMAPs found in these foods, Valdez said.
瓦尔迪兹指出：洋葱、芦笋、豆子、卷心菜、花椰菜和球芽甘蓝等特定食物会引发肠胃胀气，由于大家体内没消化这类食物中的FODMAP碳水化合物所需的酶。
This, along with a gas expansion that happens inside your stomach and intestines17 during flight elevation18, can lead to uncomfortable gas and flatulence, he added.
他说道：高空飞行本来就会致使肠胃内的气体膨胀，而这类食物则会加剧不适的胀气症状。
咖啡
A cup of joe can leave you dehydrated in an already dry environment, Valdez said, adding that coffee also has a mild diuretic effect, which can lead to more frequent trips to the bathroom.
瓦尔迪兹说：一杯咖啡会叫你在本就干燥的环境中愈加缺水。他补充道，咖啡还有轻微的利尿成效，致使你更频繁地上卫生间。
Beyond the dehydrating effects, caffeine can also keep you awake during a flight, which is often an opportunity to catch up on sleep. The need for more frequent bathroom visits can also interfere19 with your ability to doze20 during your travels.
除去脱水成效外，咖啡中所含的咖啡因还会叫你在飞行途中维持清醒，叫你失去补眠的机会。频繁上卫生间也会妨碍你在旅途中打盹。
超加工食品
If you have a sensitive stomach, you might want to steer21 clear of foods that can mess with your digestion22. That includes highly processed snacks like candy and fast food, which often contain ingredients that could unsettle your digestive system.
假如你肠胃敏锐，你应该防止吃那些影响消化功能的东西，包含糖果、速食等超加工零食，这种食品一般含有扰乱消化系统的配料。
在乘飞机前吃那些最好？
As Valdez said: A balanced meal that satisfies your thirst with water and hydrating fruits contains moderate amounts of complex carbohydrates and lean protein, and low in added sugars and sodium is ideal.
正如瓦尔迪兹所说：乘机前的理想一餐是包括解渴的水和补充水分的水果、适当的复合碳水化合物和精益蛋白质在内的平衡膳食，最好是低糖少盐。
