back and forth 來回地,反覆地
back of 在...後面
before long 不久以後
beside point 離題的,不相干的.
beyond question 毫無疑問
by air 通過航空途徑
by all means 盡一切辦法,務必
by and by 不久,遲早
by chance 偶然,碰巧
by far 最,...得多
by hand 用手,用體力
by iteslf 自動地,獨自地
by means of 用,依靠
by mistake 錯誤地,無意地
by no means 決不,並沒有
by oneself 單獨地,獨自地
by reson of 由於
by the way 順便說說
by virtue of 藉助,由於
by way of 經由,通過...方法
due to 由於,因為
each other 互相
even if/though 即使,雖然
ever so 非常,極其
every now and then 時而,偶爾
every other 每隔一個的
except for 除了...外
