My smile disappeared as he placed my plate in front of me.

当他把我的盘子放在我面前时，我的笑容消失了。

The researchers placed a vertical metal plate in the corner of a flight tunnel.

研究人员在飞行隧道的角落放置了一块垂直的金属板。

In other places, plates meet like a slow geologic car crash, crumpling up the rock and shoving it towards the sky.

在其他地方，板块像缓慢的地质车祸一样相遇，把岩石揉皱，推向天空。

So into this I'm going to place a very shallow plate, then on top of that I'm gonna pour in some water, just until it comes to the top of the plate.

所以我要放一个很浅的盘子，然后在上面倒一些水，直到它到达盘子的顶部。

Of 21 bats, 19 crashed at least once into the plate, but never into walls or other objects Collisions also occurred when the researchers placed the metal plates outside of caves of three different bat species.

在 21 只蝙蝠中， 有 19 只至少撞到金属板一次，但从未撞到墙壁或其他物体。 当研究人员将金属板放在三种不同蝙蝠的洞穴外时， 也会发生碰撞。