Because of the great weight pressing down on them, these layers tend to fold downward at weak spots, and this finally causes an actual break in the crust.

由于巨大的重量向下压岩层，使它趋于在它的薄弱处向下折叠，这最终导致地壳的实质断裂。

Release holder and fold down .

松开保持架并折叠。

This nippy new car has fold down rear seats.

这辆速度很快的新车配有可以放倒的后座。

The price of TV are two fold down over these years.

近几年来，电视机的价格下降了两倍。

Don't fold down the corners of the page, it damages the book.

别把书页角折起来，这要把书弄坏了。