1.
An Experimental Study on Mathematics Instruction Quality Improvement in High School-A Research Conducted in Qiaojia County of Yunnan Province;
云南省巧家县（特困地区）中学数学教育质量提高的实验研究
2.
It chanced that I was out when he called.
他来访时恰巧我不在家。
3.
Mother brought home a box of chocolates.
母亲带一盒巧克力回家。
4.
performance by or technique of a pianist.
钢琴家的演出或技巧。
5.
a pianist famous for his virtuosity
以技巧著称的钢琴家
6.
A writer skilled at crafting humor.
作家展现他的幽默技巧
7.
The manipulation of the brush determines the skill and style of a calligrapher.
运笔技巧决定了书法家的书写技巧和风格。
8.
An eloquent and skilled public speaker.
演讲家以技巧、雄辩见长的演讲家
9.
Father was the head of Kuanyuan County then, and we lived in the Official Residence.
家父那时是广元县的知县。
10.
Hua long county is one of major destitute counties that the state exploiting and supporting the poverty.
化隆县是国家扶贫开发重点县之一。
11.
That's too bad．Do you have his home number?
真是不巧。你有他家里的电话吗？
12.
A most Ingenious use of a common household product, Captain.
上校，最常见的家庭用品，最灵巧的用法。
13.
As it happens,I have left the note book at home.
不凑巧，我把那本笔记本放在家里了。
14.
As luck would have it, I was caught in the rain on my way home.
真不凑巧，回家的路上我淋了一场雨。
15.
This artist uses contrast between light and dark skilfully.
这位画家巧妙地运用明暗的对比。
16.
She happened to be out/It happened that she was out when he called.
他打电话时, 她恰巧不在家.
17.
in case you happen to lose your wallet on the way home, sir,
如果你在回家的路上碰巧丢了钱包，
18.
He happened on the book in an secondhand bookstore.
他碰巧在一家旧书店里发现了这本书。