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.
在沃尔芬北部，对于一批建造于20世纪60年代的预制板活动房公寓，结果似乎是失大于得;VZDj0sWIb=!j._-。

2. by some estimates 据估计
By some estimates China alone might use 26m tonnes a year within a decade and a half.
有人估计在15年内仅中国每年就将使用2.6千万吨钾肥IoOmO#!&QRSazk8a。

3. without a doubt 毫无疑问
Without a doubt the Iraqis do possess modern anti-tank weapons but so far use them on a "very limited scale. "
毫无疑问，伊拉克人是有现代反坦克武器的，但到目前为止仅使用“规模还很有限”Lu9+8Q63yo3qjP)Hjbb4。

4. get off the ground 取得进展
t took a while for the business to get off the ground, but it's making a profit now.
这家公司经过相当长一段时间之后才有了起色，不过现在已经开始盈利了,TJR%.]]0[CE.wLQBN6~。