1. a collection of 一批
In North Wolfen, a collection of prefab apartment buildings put up in the 1960s, the losses seem to outweigh the gains.
在沃爾芬北部，對于一批建造于20世紀60年代的預制板活動房公寓，結果似乎是失大于得;VZDj0sWIb=!j._-。

2. by some estimates 據估計
By some estimates China alone might use 26m tonnes a year within a decade and a half.
有人估計在15年內僅中國每年就將使用2.6千萬噸鉀肥IoOmO#!&QRSazk8a。

3. without a doubt 毫無疑問
Without a doubt the Iraqis do possess modern anti-tank weapons but so far use them on a "very limited scale. "
毫無疑問，伊拉克人是有現代反坦克武器的，但到目前為止僅使用“規模還很有限”Lu9+8Q63yo3qjP)Hjbb4。

4. get off the ground 取得進展
t took a while for the business to get off the ground, but it's making a profit now.
這家公司經過相當長一段時間之后才有了起色，不過現在已經開始盈利了,TJR%.]]0[CE.wLQBN6~。