Ballasting
n. 压舱材料, 道碴材料
🗣️ 情景例句
Your room number is 512. Here's your key.
房间号码是512。这是您的钥匙。
Wonders are many, and nothing is more wonderful than man.
奇迹很多，但没有一件东西比人更为奇妙。
Spiders are not insects, as many people think, nor even nearly related to them.
许多人认为蜘蛛是昆虫，但它们不是昆虫，甚至与昆虫毫无关系。