I contributed a pound towards Jane's leaving present.是什么意思？

I contributed a pound towards Jane's leaving present.

我凑了一英镑给简买告别礼物。

contributed

v. 捐献( contribute的过去式和过去分词 )，捐助，撰稿，投稿；

例句
This has contributed to the lack of confidence in the police...
这导致了大家对警方缺乏信任。

pound

n. 英镑，磅，兽栏，重击声；vt.& vi. 连续重击，咚咚地走；vi. （持续地）苦干，（驾舟时）拍打（水面），（心脏）狂跳，脚步沉重地走（或跑）；vt. 连续重击，捣碎，碾碎，强迫吸收，猛烈袭击；

例句
...a new tax band of 20p in the pound on the first £2,000 of taxable income.
对应税收入的头两千英镑每镑征收20便士的新税阶

towards

prep. 朝，向，对于，接近，为了；

例句
...absent fathers who fail to pay towards the costs of looking after their children.
那些不在子女身边、未能支付抚养费的父亲

leaving

n. 离开；v. 离开( leave的现在分词 )，遗弃，忘了带，交托；

例句
The sun has already set, leaving the sky afire with orange and green light.
太阳已经落山，但天空中还映照着如火般橙绿相间的余晖。

present

adj. 现在的，目前的，出席的，[语法学]现在时的；n. 现在，礼物；

例句
This could be an advance on the present situation.
这样可能会改善当前状况。