Sth . be used to do sth.

是固定词组，意思是用来做某事。

A computer can be used to do all its accounts.

电脑可以用来计算所有的账目。

Computers can be used to do a lot of work now.

如今电脑可用来做许多事。

Because of its land can be used to do mortgages.

因为它的土地可以用来做抵押贷款。

The ondata event of a can similarly be used to do other custom updating.

类似地，的ondata事件可用于处理其他定制的更新。