您要查找的是不是：
- a vacuous expression on his face 他脸上直愣愣的表情
- a vacuous expression 傻傻的表情
- A vacuous comment. 空洞的评价
- Therefore, to avoid a vacuous academic talk, ethical misconduct cannot be treated with vague academic parlance. 因此，为了避免空洞的学术性议论，对科学道德规范中的明知故犯不能用含糊不清的学术议论进行对待。
- Rarely can such a vacuous concept have found its way into a debate claming to provide enlightenment. 这样一个空洞的概念很难设法进入声称要提供启示的争论之中。
- a vacuous stare, remark, laugh, expression 呆视、 空洞的话、 傻笑、 茫然的表情.
- The second was that he repeated a vacuous mantra about a strong dollar being in America's interests, even as everyone knew policymakers quietly welcomed its slide. 第二，虽然财政部长夸夸其谈，大唱赞歌，说什么美元的优势符合美国人民的利益，可是谁都知道那些决策者暗地想美元下滑。
- He always shows a doleful expression. 他总是露出忧郁的表情。
- A constant, variable, function name, or expression. 一种常数、变量、函数名或表达式。
- He looked at her with a solemn expression. 他表情严肃地望着她。
- There is a vein of melancholy in his character. 他的性格中有少许忧郁的气质。
- There was a long lag in forwarding mail to us. 转寄给我们的邮件晚了很久才拿到。
- A bowl of hot chicken soup is good for you. 喝一碗热鸡汤对你有好处。
- A cloud is a mass of vapor in the sky. 云是天空中的水汽团。
- A country must have the will to repel any invader. 一个国家得有决心击退任何入侵者。
- A fire was burning in the grate. 火在壁炉中燃烧着。
- They cleaved a path through the wilderness. 他们在荒原中开辟出一条路。
- They denounced him to the police as a criminal. 他们向警方告发他是罪犯。
- This place doesn't have a very savory reputation. 这个地方的名声可不太好。
- This strain of wheat can grow during a cold spring. 这种小麦可以在寒冷的春天生长。
