1. sour adj.酸的
Some people don't like lemon juice; it tastes sour.
有些人不喜欢柠檬汁,因为它是酸的.

2. square n.正方形
A square has four equal sides and four 90 degree angles.
正方形有4个等边和4个90度的角.

3. stout adj.肥胖的
同.fat 反.slender
He was too stout to fit into his old clothes.
他太胖,以致穿不下旧衣服.

4. superintendent n.监督者
He is the superintendent of this school.
他是这所学校的督学.

5. tangle v.缠结
同.entangle 反.disentangle
I don't like to sew with thread that tangles easily.
我不喜欢用容易打结的线缝东西.

6. thumb n.拇指
He accidentally hit his thumb with the hammer.
他不小心用铁锤敲着了拇指.

7. treaty n.条约
同.agreement
The peace treaty was signed in Paris last summer.
和平条约于去年夏天在巴黎签订.

8. vanish v.消失
同.disappear
Their fear vanished when the storm ended.
当暴风雨结束时,他们的忧虑也消失了.

9. warfare n.战争
同.war
Civilians as well as soldiers take part in modern warfare.
现代战争中,平民同士兵一样要参战.

10. witty adj.机智的
A witty person makes witty remarks.
机智的人说话机智.