Sliding velocity
[机] 滑动速度
🧩 词语组成解析
a. 滑行的, 变化的\\n[机] 滑动
🗣️ 情景例句
Grandpa taught me.
爷爷教我的。
Any personal hobbies such as sports, music and collecting stamps never had a place in his life.
任何一种个人的业余爱好，如体育活动，音乐，集邮等等在他的生活中从未有过地位。
later, we shall undergo a progressive loss of our vigour and resistance which, though imperceptible at first,
再迟一些，我们就要经历生命力和抵抗力逐步衰退的过程。虽然这个过程起初难以觉察，