高考We've all been there: in a lift, in line at the bank or on an airplane, surrounded by people who are, like us, deeply focused on their smartphones or, worse, struggling with the uncomfortable silence.

我们都去过那里：在电梯里，在银行排队，或者在飞机上，周围都是像我们一样专注于智能手机的人，或者更糟糕的是，在令人不安的沉默中挣扎。

四级Therefore, these new findings should help airplane passengers to feel less vulnerable to catching respiratory infections while traveling by air.

因此，这些新发现将有助于飞机乘客在乘飞机旅行时减少呼吸道感染的风险。

四级airplane food might not really be as tasteless as you originally thought.

飞机上的食物可能并不像你最初想象的那样无味。

四级Although in-flight infections thrive in dry environments like airplanes, your risk of getting sick from an airplane is actually low because of the air filters used.

尽管飞行中的感染在飞机等干燥环境中很常见，但由于使用了空气过滤器，你在飞机上生病的风险实际上很低。

四级Modern airplanes have two black boxes: a voice recorder, which tracks pilots' conversations,and a flight-data recorder, which monitors fuel levels, engine noises and other operating functions that help investigators reconstruct the aircraft's final moments.

现代飞机有两个黑匣子：一个是语音记录器，用于跟踪飞行员的对话；另一个是飞行数据记录器，用于监测燃油油位、发动机噪音和其他操作功能，帮助调查人员重建飞机的最后时刻。

考研Airborne technologies, such as different types of radar and photographic equipment carried by airplanes or spacecraft, allow archaeologists to learn about what lies beneath the ground without digging.

机载技术，如飞机或宇宙飞船携带的不同类型的雷达和摄影设备，使考古学家无需挖掘就能了解地下的东西。

四级It is an indispensable device on an airplane.

它是飞机上不可缺少的设备。

高考For example, the moment you get on the airplane, start adjusting your biological clock to the destination's time.

例如，你上飞机的那一刻，就开始根据目的地的时间调整你的生物钟。

六级You don't preserve an airplane by keeping it on the ground, you preserve it by keeping it in service.

你不是通过让飞机停在地面上来保护它，而是通过让它继续使用来保护它。

四级Prior to the new study, little was known about the risks of getting directly infected by common respiratory viruses, such as the flu or common cold, on an airplane, the researchers said.

研究人员说，在这项新研究之前，人们对在飞机上直接感染常见呼吸道病毒（如流感或普通感冒）的风险知之甚少。

四级They record where you are going,how fast you're traveling and whether everything on your airplane is functioning normally.

它们记录你要去哪里，你旅行的速度，以及你飞机上的一切是否正常。

六级You can also use apps like Off Time or Unplugged to create tech free zones by strategically scheduling automatic airplane modes.

您还可以使用诸如“关闭时间”或“不插电”之类的应用程序，通过战略性地安排自动飞行模式来创建无技术区。

四级It ensures the normal functioning of an airplane

它确保了飞机的正常运行

高考Jet airplanes and big trucks didn't exist yet.

喷气式飞机和大卡车还不存在。