Heeltapping
n. 鞋跟皮层；杯中(或瓶底的)残酒；残剩饮料
🗣️ 情景例句
Part of the building for older people,
建筑物中的一部分给老年人用，
We must have your LC at least one month before the time of shipment.
我们必须在船运前一个月收到你们的信用证。
The comparable speed from the Moon is only 1.5 miles per second.
而从月球出发的相应速度只是每秒1。5英里。