Some are new compounds which have been used for only a few years.
其中一些化合物是近几年开始使用的。
There are no decisions which have been taken about military action.
还没有决定说要进行军事行动。
"There are certain areas which have been handed over to the police," Janjua said.
他说：“某些区域已被移交给警察。”
The one bright spot is corporate earnings, which have been fairly good for Q3.
一个亮点是企业财报—三季度表现相当好。
He has three sons, two of which have been abroad.
他有三个儿子，两个出国了。(定语从句)。
They are problems left (which have been left) over by history.
这是历史遗留下来的问题。
Most of you gentlemen are aware of procedures which have been agreed on.
诸位同仁大多了解约定的程序。
The elements which have been studied most are those from gadolinium to thulium.
研究得最多的是从钆到铥之间的元素。
The elements which have been studied most are those from gadolinium to thulium .
研究得最多的是从钆到铥之间的元素。
Five years professional experience, three of which have been in a management position;
五年业务工作经验，其中三年在管理岗位；
Musicians will be performing pieces, some of which have been written especially for this event.
北京的音乐人也将表演一些片段，其中一些是专门为此次演出创作的。
Which have been the most reliable?
哪些又最可靠呢？
Which have been the most reliable?
哪些又最可靠呢？
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