Select multiple lifelines.

选择多个生命线。

A similar problem would occur with lifelines.

生命线也会出现相同的问题。

Types of lifelines.

生命线类型。

They can grab lifelines, throw rings, etc.

他们能抓住救生索以及吊环等。

The timing diagram portrays lifelines across a period of time.

计时图描述了一个时期内的生命线。