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