Their parties are always fun.
他们的聚会总是乐趣横生。
Which is their house?
哪座房子是他们的？
If anyone calls, ask for their number so I can call them back.
如有人打电话来，问问他们的电话号码，这样我可以回电话。
1.他们的,她们的,它们的,代指之前已经提到的或指向非常明显的一群人或事物的
2.〈口〉她的或他的,代替“他的或她的”使用,很多人认为这是错误用法
1.belonging to or relating to a particular group of people or things that have already been mentioned or when it is obvious which ones you are referring to
2.<spoken>used instead of "his or her", especially when you are referring back to a word such as "everyone", "someone", or "anyone". Many people consider this use incorrect
1.At the opposite end of their orbit, transiting planets disappear behind their home star, in an event known as a "secondary transit. "
在轨道相反的一端，凌日行星消失在主星身后，这一事件称为“次凌”。
2.There is no doubt that the reasons for international investors to consider Sierra Leone as their choice for investment are many.
毫无疑问，对国际投资人来说，投资塞拉利昂的理由是丰富的。
3.For the husband works so hard that he never knows how much their wife pays for the children.
丈夫在外面努力工作的时候他并不知道他妻子是怎样为儿女付出的。
4.One day during their exercising, Laverne walked around the prison quietly and found a dilapidated wall, which can be climbed.
有一天放风，拉文不露声色地在监狱里走了一圈，发现一处围墙破旧，可以攀登。
5.Its no longer the case that somebody can sit, walled up in their castle and wait for the enemy to go away.
人们坐守城堡并加强其防御攻势，等着敌人知难而退的日子一去不复返了。
6.Their decision to sign onto such a document was surely not taken lightly, and their words should not be so brusquely brushed aside.
他们决定签署这样一个文件，肯定不是轻而易举，因此他们的话不应那么坦然地被置之不理。
7.Secondly, the data on which the standards calculation based are relatively easy to obtain, which protects their operability.
其次，标准计算过程中依据的数据指标都比较容易得到，这保障了它们的可操作性。
8."As blind as a bat" is often heard. Yet they have no trouble flying on the darkest nights and finding their way round very well.
我们总能听别人说“蝙蝠几乎和瞎了一样”，但他们在黑暗中飞行，并且找到他们的航路却没有任何问题。
9.Tears ran from both of their eyes and she drew her arms around the shoulders of her father.
泪水从他们的眼中流出，她伸出胳膊搂住了父亲的双肩。
10.Respondents were asked whether or not they text ed 'I love you' to their partner on a regular basis, to which 61 per cent replied yes.
当受调查者被问及，在通常情况下是否曾发送“我爱你”的短信给他们的伴侣时，有百分之61的回答是肯定的。