如果我们不让空气进入铃罩，铃罩中的电铃一定会因缺少介质而不响了。

If air weren't admitted into the bell jar the electric bell in the bell jar would not ring because of a lack of a medium.

youdao

如果我们不让空气进入铃罩，铃罩中的电铃一定会因缺少介质而不响了。

If air weren't admitted into the bell jar, the electric bell in the bell jar would not ring because of a lack of a medium.

youdao

在没有空气的情况下，物体的速度只取决于下落的时间而不取决于物体的重量。

In the absence of air, the speed of the body depends only on the time of the fall, and does not depend on the body's weight.

youdao

在没有空气的情况下，物体的速度只取决于下落的时间而不取决于物体的重量。

In the absence of air, the speed of the body depends only on the time of the fall, and does not depend on the body's weight.

youdao