So don't buy cheap or weak locks.

也就是说，要买便宜或者固锁。

Nobody could break in without breaking the strong latch in two.

如果固门两半，谁都无法闯入。

The walls of his chest seemed to thrill and quiver as a frail building would do inside when some powerful engine was at work.

他胸腔微微震动，就象在一座固建筑中，开动了一架强力机平时情形一样。