Tractility
n. 延展性
🗣️ 情景例句
What are the flowers for, Richard?
究竟为什么送花 ，Richard？
That's why I am here.
那是我在这里的原因。
So it is a comparatively simple step from locating the sea bottom to locating a shoal of fish.
从测定海深到测定鱼群，这一进展比较容易。