1. He ripped the letter open with a knife.
    他用刀子一下子把信裁开了。

2. His mouth was half open with dribbling saliva.
    他的嘴半张着, 淌着口水。

3. He held that a man of learning, if he does not wish to degrade himself, must never cease to participate in public affairs — he must not shut himself up in his study or laboratory and shun the social and political struggles of the day.
    他认为，一个有学问的人，除非他自甘落伍，应该从不停止参加公众活动——他不能把自己关在书房或实验室中，逃避现实社会和政治斗争。

4. He came home the same way, the front door flying open, his cap on the floor, and the voice, suddenly rough, shouting, "Isn't anybody here?"
    他回家时还是那副粗鲁样：撞开前门，把帽子往地板上一扔，突然粗着嗓门喊道："家里有人吗？"

5. Does that window open inwards or outwards?
    那个窗户是向里开，还是向外开？

6. Doctor: Open your mouth, Jimmy. Show me your tongue. Say, ´Ah´.
    医生: 吉米, 把嘴张开. 让我看看你的舌头. 说"啊".

7. A book that remains shut is but a block.
    书本不常翻，犹如一块砖。

8. All gun-ports were open and the muzzles peeped wickedly from them.
    船上的炮眼都开着，炮口虎视眈眈地向外窥视着。

9. As soon as this was done, they cooked a meal over an open fire.
    这件事刚刚做完，他们就在篝火上烧起了饭。

10. "People in and near cities have little opportunity to experience parks or unprotected open spaces, and that's becoming a problem," says Mister Ernest Cook, a senior vice president of the Trust for Public Land (TPL).
    "住在城里或城市附近的人们很少有机会看到公园或开阔的空地，这正在成为一个问题," 公有土地信托机构的资深副总裁欧内斯特·考克先生说。