She goes to a middle school

一所───One;中学───middle school

We've tried this method for no one knows how many times.───这种方法我们已不知试了多少次.

Knit one row, purl one row.───织一趟平针，织一趟反针。

The potential of hydroelectricity of one region varies from that of another.───水电的潜力因地而异.

The enemy's atrocities made one boil with anger.───敌人的暴行令人发指.

One of the hostess's duties is to mingle with the guests.───女主人的职责之一是与客人们交际.

My lot is a hard one.───我的命运坎坷.

Wash the white clothes together, and the blue one separately.───那些白衣服放在一起洗, 这件蓝的要单洗.

The race gave every one a great deal of pleasure.───这次比赛给了大家许多乐趣.

Beware of a man of one book.

Rome was not built in a (or one) day.

My sister was the one who travelled farthest.

One barking dog sets all street a-barking.

Gain got by a lie will burn one’s fingers.