Specialising
v. 专门从事, 专攻( specialise的现在分词 )
🗣️ 情景例句
Why should you be sorry?
你何必说对不起呢？
Love should not be all on one side.
爱情不应是单方面的。
At the base of the gold cap, the words 'made in the U.S.A' had been nearly inscribed.
笔帽下方整齐地刻有“美国制造”字样。