Airsecond
时间标度
🗣️ 情景例句
Advice doesn't normally come cheap, but this piece is for free...
通常来说，忠告都是价值不菲的，但这个是免费赠送的。。。
When are you off?
你什么时候动身？
Which one is cheap? Which one is dear?
哪一支便宜？哪一支贵？