Specialising
v. 专门从事, 专攻( specialise的现在分词 )
🗣️ 情景例句
Including Susan.
包括Susan的。
I wrote to my uncle last night.I couldn't put it off any longer.
我昨晚给我的叔叔写了信.我不能再推迟寄信了。
Did you pay by check or cash?
你用支票还是现金？