Tiedown
n. 系紧（栓系）
🗣️ 情景例句
Aren't you going to the aerobics class this morning?
今天上午你不是去上有氧运动课吗？
He's on the phone.
他在打电话。
Even if you travel in ideal weather, sea journeys take a long time.
即使风平浪静，坐船旅行也要占用很长时间。