Eyewitnesses said trucks dropped cement blocks across the roads leading into and out of the camp.

目击者称，卡车在进出难民营的道路上扔下了水泥块。

Oysters were seeded on the piers and ever since, their concretions have helped cement the granite blocks together.

在桥墩上进行牡蛎育种之后，利用它们的凝固物可以将花岗岩胶合凝结起来。

Then, in the 1970s and '80s, cement blocks were laid across the lake bed to prevent further wind erosion.

然后，在 20 世纪 70 年代和 80 年代，人们在湖床上铺设了水泥块，以防止进一步的风蚀。

This cement block looks heavy, but this cement block looks heavier than this cement block.

这个水泥块看起来很重， 但是这个水泥块看起来比这个水泥块重。

So this cement block is heavy.

所以这个水泥块很重。

So I'm going to try and lift this cement block ten times.

所以我要试着举起这个水泥块十次。

But when I look here I think this cement block is probably the heaviest.

但是当我看这里时， 我认为这个水泥块可能是最重的。