Ballasts
n. （保持船身稳定的）压舱物( ballast的名词复数 ); 镇定物; 安定; 压舱材料
🗣️ 情景例句
Thanks, Robbie.
谢谢，Robbie。
How old do you have to be to vote in the national elections?
你要多大才能在大选中投票？
A great many former pupils will be attending a farewell dinner in his honour next Thursday.
很多老同学都准备参加下星期四为他举行的告别宴会。