empty suit 吃白饭的懒人（俚语）

英文释义

A lazy person of high authority lacking convictions, initiative, and intelligence.

例句

The new committee member attends every meeting, but says very little, and appears to be merely an empty suit who contributes nothing to the important work of the group.

委员会的这位新委员出席所有会议，但几乎不发言，看上去就像个吃白饭的，对团队的重要工作毫无贡献。