Ballasting
n. 压舱材料, 道碴材料
🗣️ 情景例句
It's certainly a good idea.
这的确是个好主意。
What were you doing at about 4 o'clock yesterday afternoon?
你昨天下午在大约4点钟正在做什么？
This is the point I wish to emphasize.
这就是我要强调的论点。