Masteries
n. 精通, 熟练（mastery的复数形式）
🗣️ 情景例句
Going away to college for the first time
第一次离家上大学，
Are you married?
你结婚了吗？
It comes nearer to the engines with which man has 'conquered' the air, as he boasts.
它更近乎于人类自夸的“征服”了空气的发动机。