They could travel through the air, float in water, and lie dormant for many months.
它们可以在空中飞行，漂浮在水里，还可以休眠好几个月。
I love to travel through the air.
我热爱搭飞机旅行。
Just how fast does sound travel through the air?
声音在空气中的传播速度究竟有多快？
Airplanes enable people to travel through the air.
飞机使人们能够在空中旅行。
HIV does not travel through air or food and cannot live long outside the body.
HIV不能通过空气或食物传播，并且在体外不会存活太久。
HIV does not travel through air or food and cannot live long outside the body.
HIV不能通过空气或食物传播，并且在体外不会存活太久。
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