passive

许多研究表明，害羞、顺从的孩子往往会受到同学的社交排斥。

Many studies have shown that shy, ___passive children tend to be socially rejected by their classmates.

亨利在这场赌局中处于被动地位。

Henry played a ___passive role in the bet.

避免被动吸烟很重要。

It is important to avoid ___passive cigarette smoking.