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
The truth is, I am.
事实上， 我的确如此。
I don't know what you're thinking!
真不知道你是怎么想的！
When you have found a building in which to start your school.
你找到开办学校的楼房后