The doctor assured us of the safety of the operation.

医生向我们保证手术的安全性。

youdao

Safe operation is assured for beginning and regular turns, is convenient.

安全操作是首要问题，常规转动是很方便的。

youdao

Safe operation is assured for beginning and regular turns, is convenient.

安全操作是首要问题，常规转动是很方便的。

youdao