hard upon

• adv. 接近于

hard upon的用法和样例：

例句

1. And then there came a blinding flash ... and hard upon the heels of it, a great tow-row of thunder.
   一道耀眼的闪光，把人们的眼睛都照花了 ... 紧接着轰隆隆传来一声巨雷。