I always lock up my money in a strong box.

我总是把钱放在一个结实的盒子里，锁好保管起来。

youdao

They must be packed in a proper strong box.

必须用合适的、结实的箱子包装。

youdao

It's safe to keep the money in an extra strong box.

把钱放在这个非常坚固的盒子里很安全。

youdao

It's safe to keep the money in an extra strong box.

把钱放在这个非常坚固的盒子里很安全。

youdao