他问路时店员给了他一个空洞茫然的眼神，显然根本没理解他的问题。
The clerk gave him a vacuous look when he asked for directions, clearly not processing the question.
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解释
vacuous 形容表情眼神空洞无物、缺乏思考的痕迹。
The clerk gave him a vacuous look when he asked for directions, clearly not processing the question.
vacuous 形容表情眼神空洞无物、缺乏思考的痕迹。