a bit (少量)                         a little

about (到处)                       around

abroad (在国外)                 overseas

add sign (加号)                  addition sign

aeroplane(飞机)                 airplane

aim (目标;目的)                 goal

all in one go (突然)            all at once

all-round (全面的;多方面的) all-around

afterwards (后来;然后)      afterward

air hostess(空中小姐)         airline hostess