motor
n.马达
This machine is powered by two electric motors.
这台机器是由两个电动马达提供电力的。
engage
vt.使订婚 vi.从事,忙于（与介词in并用）
My eldest son is engaged to his classmate from college.
我的大儿子和他的大学同班同学订婚了。
The two sides engaged in peace talks.
双方从事和平谈判。
engagement
n.订婚；（尤指公务上的）约会
The couple announced their engagement at the dinner party.
这对情人在这场晚宴上宣布他们订婚的决定。
Ted has an engagement for dinner with his boss tonight.
泰德今晚和他的上司有约吃晚饭。
murder
vt.谋杀 n.谋杀（案）
The man committed murder and was sentenced to thirty years in prison.
这个男子犯了杀人罪，被判30年有期徒刑。
Two suspects were arrested soon after that girl was murdered.
那个女孩遭到杀害没多久,有两名嫌犯就被逮了。
murderer
n.凶手
The rich old man was murdered half a year ago, and the murderer is still at large.
那位有钱的老先生6个月前遭人杀害，而凶手仍逍遥法外。
roast
vt. vi.烤（肉)
One famous dish from Germany is roasted pork knuckle.
烤猪脚是一道有名的德国菜。
reasonable
a.合理的:讲理的
I bought this piece of furniture at a reasonable price.
我以合理的价格买了这件家具。
I don't think she's being reasonable about this.
我认为她对这件事不讲道理。
reasonably
adv.相当地；合理地
The students were reasonably good at singing.
这些学生相当会唱歌。
The used car was reasonably priced.
这辆二手车的标价很合理。
missing
a.失踪的；缺的
The hiker was reported missing three days ago and was found this morning.
这名登山客于3天前据报失踪，在今晨寻获。
Several pages of the first chapter were missing.
第一章缺了好几页。
benefit
n.利益 vt.有益于 vi.获益（与介词from并用）
My trip to the US was a benefit of my job.
我的美国之旅是工作上的一项福利。
The doctor said a long rest would benefit the patient.
医生说长时间休息将会有益于该病患。
Everyone will benefit from the new road.
那条新路会造福每个人。