safe例句：
Employers should provide a safe working environment, as far as is reasonably practicable.
只要条件许可，雇主就须提供安全的工作环境。
People must be satisfied that the treatment is safe.
人们必须确信这种治疗方法是安全的。
We were glad she let us know she was safe.
她告诉我们她平安无事，我们很高兴。
The street is not safe for children to play in.
孩子在大街上玩不安全。
The child was found safe and well.
小孩找到了，安然无恙。