about 在……周围;到处 I planted bamboo about my house. After dinner I wandered alone about the town. 随身 Do you happen to have the letter about you? 刚要……突然…… be about to ……when…… I was about to turn off my computer when I received an email.
acknowledge 向……打招呼 I was standing right next to her, but she didn't even acknowledge me. 感谢 We gratefully acknowledge the contributions of everyone who helped us.
to doing (to 作 介词) be accustomed to 习惯于 be uesd to 习惯于 adapt (oneself) to (doing)sth. 适应 adjust (oneself) to (doing)sth. 调整 be addicted to (doing)sth. 沉迷于 pay attention to 注意 stick to 坚持
AD(Anno Domini)公元 add weight to sth 为某事物增加影响力/说服力 adequate 足够的;充分的 adolescence 青春期;青春 advocate 提倡,主张 agree with (气候、食物等)适合 come/ go to sb's aid 来帮助某人 in the air 弥漫在空气中;即将发生 alley 小巷;胡同
allocate 分配 allow for 考虑到 allowance 限额;零用钱;补贴 make allowance for 考虑到 all along 一直 alternative energy 替代能源 aluminium 铝 amateur 业余爱好者 ambiguous 模棱两可的 ample 大量的 anchor 锚 angle 角;角度 anonymous 匿名的 antique 古董