坍塌的英文：
cave in
fall into decay
fall into ruins
fall to pieces
go to ruin
collapse

参考例句：

Two titans are left standing in the wake of the dot-com collapse
两大巨人依然屹立在互联网坍塌的废墟中。

I saw that rusting bulkheads and decaying decks had given way during the winter
我看见生锈的舱壁和朽坏的舱面已在冬季坍塌。

Collapse Controller
坍塌控制器

When did the roof cave in ?
屋顶是什么时候坍塌的？

(phr v)cave in fall inwards;collapse
塌陷;坍方;坍塌

The roof of the tunnel caved in(on the workmen).
隧道顶坍塌(压住工人).

Shattered glass and toppling masonry
玻璃碎成碴儿，砖石建筑坍塌下来。

I do not like ruined, tattered cottages
我不喜爱坍塌、破烂的别墅。

Then there was the rumbling sound of heavy things falling.
然后传来重物坍塌时的隆隆声。

Under millions of feet, ancient stones wear out, ancient floors break down.
在千百万人的践踏下，古代的砖石在磨损，石代的地面在坍塌。

cave是什么意思：
n. 洞穴，地窖
v. （使）凹陷，塌落；在…挖洞穴；投降

They found a refuge in a cave.
他们避难于一个山洞中。

The guide flashed a light into the cave.
导游用手电筒照射洞穴。

The cave roof collapsed.
洞顶坍塌了。

fall是什么意思：
v. 落下；倒塌；摔倒；下降；减弱；阵亡
n. 摔倒；下降；秋天；垮台；陷落；瀑布
adj. 秋天的

Sleet is falling.
天上下起了冰雹。

fall into disfavour
失宠失众望

We observed the barometer fall. [The barometer was observed to fall.]
我们看见晴雨表下降。

into是什么意思：
prep. 进入…中；进入…状态；持续到；输入