coarse
a.粗劣的；粗鄙的
Jack bought a sweater of coarse wool just because it is cheap.
杰克买了一件毛质粗劣的毛衣，只因为它很便宜。
Professor Lin was accused of using coarse language in class and was later fired.
林教授被举发在课堂上使用不雅的言词，所以后来被炒鱿鱼了。
entry
n.入口
The main entry to the stadium is across the road.
体育场的主要入口在马路对面。
exit
n.出口 vt.离开 vi.从......离开
Knowing where the emergency exits are in a building can save your life.
知道紧急逃生出口在大楼何处可以救你一命。
Penny exited the classroom in a fury.
佩妮气冲冲地走出教室。
Ladies and gentlemen, when the show is over, please exit through the rear door.
诸位女士先生，节目表演完了之后，请由后门离开。
proof
n.证明（集合名词,不可数) 防……的（多用于"名词-proof"的复合字）
I wouldn't demand proof of loyalty from a friend.
我不会向朋友要求忠诚的证明。
The judge required proof of what the defendant said.
法官要求被告提出说辞的证据。
Most banks' safes are proof against fire.=Most banks' safes are fireproof.
大部份银行的保险箱都是防火的。
owe
vt.欠（债)；归功
You still owe me $1,000，and you seem to have forgotten it.
你仍欠我1000元,而你似乎已忘了这码事。
I owe what I am to my parents.=I attribute what I am to my parents.
我要把我现有的成就归功于父母。
owing
a.欠着的，未付清的
Owing to poor management, the factory shut down 2 years after it was established.
由于管理不善，工厂建立两年后就关闭大吉了。
You've paid most of the rent, but you still owe $1000.
你房租已付了大半，不过尚欠1000元。
sin
n.罪恶
In the eyes of my boss, wasting time is a sin.
我的老板认为浪费时间就是一种罪恶。
navy
n.海军
Nancy's grandfather was in the navy during the war.
南西的祖父于战争期间在海军服役。
air force
n.空军
The air force general was charged with bribery and corruption.
该名空军将军被控贪污收贿。
violence
n.暴力；猛烈
You can’t resort to violence just because you can't reason with someone.
你不能只是因为无法跟别人理论就诉诸暴力。
The violence of the storm was frightening.
暴风雨的猛烈令人害怕。