三文鱼是一个安全的选择——大多数人都喜欢它。

Salmon is a ___safe choice - most people like it.

他告诉我们这是一项安全的投资。

He told us that it's a ___safe investment.

他计划大学毕业后开始一份安全的职业。

He plans to start a ___safe career after university.