a series of 一系列,一連串
above all 首先,尤其是
after all 畢竟,究竟
ahead of 在...之前
ahead of time 提前
all at once 突然,同時(shí)
all but 幾乎;除了...都
all of a sudden 突然
all over 遍及
all over again 再一次,重新
all the time 一直,始終
all the same 仍然,照樣的
as regards 關(guān)于,至于
anything but 根本不
as a matter of fact 實(shí)際上