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
Of course you recognize him.
你当然认得他。
Did you enjoy your flight?
你的飞行旅途愉快吗？
Come on, Wu! shouted the Class 1 students. Oh! Bad luck!
“快！快呀！吴鹏！”1班的学生喊道，“啊！真倒霉！”