Their earnings were ￡250, ￡300 and ￡420, giving a total of ￡970.是什么意思？

Their earnings were ￡250, ￡300 and ￡420, giving a total of ￡970.

他们的收入分别为250 英镑、300 英镑、420 英镑，总计970 英镑。

their

pron. 他（她，它）们的，在提及性别不详的人时，用以代替 him 或 her；

例句
Their permissiveness toward their children reflects the wild abandon of their own lives.
他们对孩子的放任折射出他们自身生活的放浪形骸。

earnings

n. 收入，所得，工资，报酬，收益，利润；

例句
Despite a reduction in earnings there are compensations in moving to the north-east where the quality of life is excellent...
尽管钱会挣得少一点，搬到生活质量高的东北部去还是有很多好处的。

were

be的过去时复数和第二人称单数形式，有时代替 was,用于条件从句、动词 wish 之后等；

例句
Shops, houses, and vehicles were set ablaze.
店铺、房子和车辆全都陷于火海。

and

conj. 和，与，而且，于是，然后，因此；

例句
I spend a lot on expensive jewelry and clothing...
我花很多钱购买昂贵的首饰和衣服。

giving

n. 礼物，给予物；v. 给予，赠送( give的现在分词 )，（与名词连用描述某一动作，意义与该名词相应的动词相同），供给，交给；

例句
The US president risked giving the appearance that the US was taking sides.
美国总统冒险作出美国正在摆明立场的姿态。

total

adj. 总计的（金额等），全部的，完全的，绝对的；n. 总计，总数，全体数量；vt.& vi. 总计达，计算…的总数；

例句
He was struck by the artists' total absorption in their work.
他被艺术家对创作的全身心投入所打动。

of

prep. 关于，属于…的，由…制成；aux. 助动词 [非标准用语、方言] =have [主用于虚拟语气]；

例句
He did have a real knowledge of the country...
他对该国的确知之甚多。