Could it be the vibration in the ground?

它们是感应到了地面的震动吗？

With lockdowns in place around the world, there are fewer vibrations in the Earth that are normally caused by highway traffic, trains, busses, people moving around going about their daily lives.

随着世界各地的封锁，地球上那些通常由高速公路交通、火车、公共汽车、以及人们的日常生活引起的震动少了。

As the weight of the atom increases, the frequencies of the vibrations diminish.

原子的重量增加时，震动的频率。

The powerful tremors killed hundreds of people and destroyed thousands of homes.

强大的震动造成数百人伤亡，摧毁了数千房屋。

A seismologist says the quake was felt as far as 400 miles away and that this was the most significant tremor that Anchorage had experienced since a historic 9.2 magnitude quake struck in 1964.

一位地震学家说，400英里之外感觉到了地震，这是自1964年发生历史性的9.2级地震以来安克雷奇经历的最大的震动。

Otherwise the shock from the constant impact might stress your back and knees too much.

否则，步产生的震动可能会使你的背部和膝盖承受太大压力。

The massive jolts of electricity were diverted down to earth.

巨大的电流震动被转移到地面上。

When an earthquake strikes, the erratic movement of the ocean floor can generate a tsunami.

当地震发生时，海床上的不稳定的震动就会产生海啸。

When Shenzhou V let out its parachute, I felt the ship was shaking.

神州五号打开降落伞后，我感觉到了飞船的震动。

For the 'B', you want to activate your vocal cords.

而‘B’呢，就需要你的声带震动起来。

When a shock came, it shook the rigid table upon which these stood.

一旦有地震，就会震动竖立在坚硬的桌上的木棒。

The area was rattled by earthquakes and we're looking at 'rattled'.

该地区受到地震的震动，我们正在看“rattled”这个词。

The pockets of trapped air in between the snowflakes actually weaken the vibrations and converts the sound into small amounts of heat.

在雪花之间空隙里的空气渐弱了声音的震动，并且把声音转换成热量。

Then the compression itself is accompanied by very powerful shocks such as those that seismographs recorded, therefore, approximately 25% of moon quakes as a result of cooling of the lunar subsurface.

然后，这种压缩本身就伴随着非常强烈的震动，比如地震仪记录的那些震动，因此，大约25%的月球地震是由于月球地下表面冷却造成的。

She was delighted with the vibrations that she felt when the watch struck the hour.

她对手表报时时的震动感到高兴。

Les Paul wanted an instrument in which only the strings vibrated.

莱斯·保罗想要一种只有琴弦震动的乐器。

And so, something is going on and it's shaking the planet.

因此，某些正在发生的事情震动了地球。

The string is vibrating higher when it's exactly twice what the lower one is.

高音弦的震动频率正好是低音弦的两倍。

Its effects were felt around the world for days after the event.

其引发的震动好几天可以在世界各地感受到。

As Doug approaches, it calls out with a stream of loud clicks.

道格靠近时，它发出一连串响亮的咔哒声（鲸鱼震动鼻道发出的声音）。