When he got a job in a bank, he had to swap his jeans and T-shirt for a suit (= he had to wear formal clothes instead of informal ones).

[+ two objects] I'll swap you my chocolate bar for your peanuts.

3. You will have the opportunity to take part in the drumming and dancing, and listen to traditional accounts of bravery as well as play games! (P46) 你将有机会参与击鼓和跳舞，听传统的英雄故事，玩游戏。

take part in

to be involved in an activity with other people:

She doesn't usually take part in any of the class activities.

比较take part in, join in, join与attend:

take part in 指参加有组织的，严肃，重大的活动。

join in 指参加正在进行着的活动或游戏等，有时可与take part in换用。

Join指参加团体或组织，成为其中的一个成员，也可用于join sb.（与某人一起）。

attend 相当于be present at意为"出席，参加"

eg. It's a great club. Why don't you join?

We only need one more player for this game - can you persuade your sister to join in?

The meeting is on the fifth and we're hoping everyone will attend.

account

n. [C] a written or spoken description of an event:

She gave a thrilling account of her life in the jungle.

He kept a detailed account of the suspect's movements.

n. FORMAL

on account of sth. because of sth.:

He doesn't drink alcohol on account of his health.

on your account If sth. is said to be on someone's or sth.'s account, it is because of that person or thing:

I'm not very hungry so please don't cook on my account (= don't cook just for me).

on no account If something must on no account/not on any account be done, it must not be done at any time or for any reason:

Employees must on no account make personal telephone calls from the office.