Heaviside
海维赛德(①姓氏 ②Oliver, 1850-1925, 英国物理学家、电气工程学家)
🗣️ 情景例句
It's five years ago.
那是五年前了。
Frugality is an estate alone.
仅仅节约就是一笔财产。
Don't dream away your time.
不要虚度光阴。