1. 自愿参加者,志愿者[(+for)][(+to-v)]

The volunteers for community service are doing a good job.

社区服务的志愿者做得很出色。

3. (精神)错乱;(思想)混乱;出神,开小差

My attention wandered.

我走了神。

volunteer

n.[C]

2. 离开正道;离题[(+from/off)]

During the storm the ship wandered from its course.

船在风暴中偏离了航道。

He wandered from the subject.

他说离了题。

1. 漫游;闲逛;流浪;徘徊[(+about/off/over/through)]

He wandered in the streets.

他在街上游荡。

3. 困惑,迷惑[S]

I’m in a puzzle as to how to cope with the new situation.

我不知道该如何应付这新局面。

Silk from China found its way over land along the Silk Road to India, the Middle East and Rome, in exchange for spices and glass, which was not known to China.

in exchange for与……交换

She is giving him English lessons in exchange for his teaching her Chinese.

她教他英语，他教她汉语。

wander

vi.

2. 难题,谜,难以理解之事[S1]

Her decision was a puzzle to him.

她的决定对他来说是个谜。

1. (游戏的)猜谜,智力竞赛[C]

2. 苦思,冥思苦想[(+about/over/as to)]

n.

1. 感到迷惑[(+at)]

I have been puzzling about this question for weeks now.

我对这个问题已冥思苦想了好几个星期。

2. 苦思而得出[(+out)]

I could not puzzle out her intentions.

我猜不出她的意图。

We finally puzzled out the meaning of the poem.

我们苦苦思索终于理解这首诗的意思。

vi.