Lily will act in Snow White.

莉莉将会扮演白雪公主。

He directed as well as act in the film.

他导演了这部影片并且在里边扮演了角色.

The teachers and the students lie in opposite position . They act in the dissimilitude role.

教师和学生处于教与学的两个方面, 他们所扮演的角色独立而没有互动.

He likes to act in school plays.

他喜欢在学校的戏剧中演戏。

They act in the community theater.

他们在社区剧院演戏。

The new policy requires all departments to act in lockstep.

新政策要求所有部门步调一致地行动。

They act in collusion with each other to cover up the truth.

他们沆瀣一气，试图掩盖真相。

She dreams of performing her solo act in a famous odeum one day.

她梦想有一天能在著名的小剧场表演她的独角戏。

The trustee must act in the best interests of the beneficiaries.

受托人必须以受益人的最佳利益行事。

As a mandatary, he must act in the best interest of the principal.

作为受托人，他必须以委托人的最佳利益为重。