■ exposed to

直译是“暴露”，但也可以表示非自己主动的“接触”。

• It was later established that both children were exposed to cocaine during the pregnancy.后来查明，两个孩子在母胎期间都曾经接触过可卡因。

• as long as 或 so long as
• as much as
• as of
• assertive
• assume
• assure
• assure 与 ensure
• astonish
• astound
• as well
• as well as
• as well...as
• as with
• at
• at
• at all
• at issue
• atmosphere
• at once
• at one's peril
• attention
• attention 与 caution
• at that
• at the cost of
• at the expense of