A

a couple (of) 一对，一对夫妇

a little 一点;少量;稍微

a good time to do sth 做某事的好时间

a pair of black socks 一双黑袜子

a picture of my family 一张我的全家福

a quarter past three 三点一刻

a set of keys 一串钥匙

a symbol of good luck 好运的象征

according to 依据

across from 在......对面

advise sb. to do sth 建议某人做某事

after all 毕竟

all in all 总的来说

all kinds of 各种各样的

all the time 频繁;反复

all year round 全年

another three hours 另外三个小时

around the world 世界各地

arrive in/at 到达

art festival 艺术节

as far as I know 据我所知

as for 至于

as long as 只要;既然

as soon as 一......就

ask for 请求

at birth 出生时

at least 至少

at the beginning of 在……开始

at the same time 同时

avoid doing 避免做某事

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