at first 首先，開始的時候
at large 未被捕獲的，大多數(shù)
at last 終于，最終
at least 至少
at length 最終，詳細地
at most 最多
at no time 從不，決不
at one time 曾經，從前曾
at the cost of 以……為代價
at the least 至少
at times 有時，間或
at…speed 以……的速度
attend on 照顧，侍候
attribute … to 把……歸于
back up 后退，支持
base on 基于
be able to 能夠，勝任
be about to 正打算
be accustomed to 習慣于
be associated with 與……有關，與……有關系
be aware of 意識到
be capable of 有能力干
be caught 遇到，陷入
be committed to 被交給┄，答應承擔┄義務
be confined to 限制在，局限于
be confined/be restricted 受……限制
be dedicated to 奉獻，獻給
be devoted to 被用于，貢獻給
be directed to 指向，針對
be drawn to 被┄所吸引
be due to 由于，因此
at large 未被捕獲的，大多數(shù)
at last 終于，最終
at least 至少
at length 最終，詳細地
at most 最多
at no time 從不，決不
at one time 曾經，從前曾
at the cost of 以……為代價
at the least 至少
at times 有時，間或
at…speed 以……的速度
attend on 照顧，侍候
attribute … to 把……歸于
back up 后退，支持
base on 基于
be able to 能夠，勝任
be about to 正打算
be accustomed to 習慣于
be associated with 與……有關，與……有關系
be aware of 意識到
be capable of 有能力干
be caught 遇到，陷入
be committed to 被交給┄，答應承擔┄義務
be confined to 限制在，局限于
be confined/be restricted 受……限制
be dedicated to 奉獻，獻給
be devoted to 被用于，貢獻給
be directed to 指向，針對
be drawn to 被┄所吸引
be due to 由于，因此