Jen的回答：

abandon [?'b?nd?n] vt. 1. 放弃；弃绝；绝望；断念：

He abandoned all hope.

他放弃一切希望。

to abandon a research project

放弃一个研究项目

2. (因形势紧迫、危险等)离弃(家园、飞机、船只等)；【航空学】(机上人员)弃机(跳伞)：

The sailors abandoned the burning ship.

海员们离弃燃烧着的船只。

to abandon a sinking ship

离弃正在沉没的船只

3. 丢弃(信仰等)；(不顾信义、义务、责任等而)遗弃，抛弃(妻儿等)：

The man shamelessly abandoned his wife and child for another woman.

那个男人无耻地抛弃了妻儿，另觅新欢。

to abandon a child

遗弃孩子

4. 使屈服：

to abandon someone to the mercy of

听任某人受…的摆布

to abandon a city to an enemy army

弃城任敌军占领

5. [abandon oneself] 放纵;纵情;无拘无束;使沉溺于：

After his mother died, he abandoned himself to grief.

他母亲死后，他悲伤不已。

6. 【保险业】委付 7. [废语]开除，逐出 n. 1. 放纵；纵情；无拘无束，放任 2. 狂热，狂放，狂放不羁 近义词: desert . forsake . quit . 反义词: reclaim .   abandon [?'b?nd?n] n. 1. the trait of lacking restraint or control; reckless freedom from inhibition or worry

she danced with abandon

2. a feeling of extreme emotional intensity v. 1. forsake, leave behind

We abandoned the old car in the empty parking lot

2. stop maintaining or insisting on; of ideas or claims

He abandoned the thought of asking for her hand in marriage

3. give up with the intent of never claiming again 4. leave behind empty; move out of 5. leave someone who needs or counts on you; leave in the lurch 以上来源于: