Afterwards, we received a letter, in which he offered an a____ for his rudeness at the party.
生活中“抽”字表述的现象，其原因各有不同，用抽水机“抽”水时，水是在____作用下被“抽”上来的，用抽油烟机“抽”油烟时，油烟是由于空气流速越大，压强越____的缘故被“抽”出去的
