Codivilla's extension

extension [ɪk'stɛnʃən]

n. 伸展，扩大;延长，延期;[医]牵引;电话分机;

exten=extend伸展；扩大+sion表名词 →延展，扩张；延期

I got you.

明白了。

Spare the rod and spoil the child.

孩子不打不成器。

My dear friend, Mathilde. Let me tell you something. That necklace you borrowed from me wasn't a real diamond necklace. It wasn't valuable at all. The stones in the necklace were made of glass. It was worth five hundred francs at the most.

玛蒂尔德，我亲爱的朋友。让我告诉你吧。你向我借的那条项链并不是一条真的钻石项链。那条项链根本不值钱。项链中的宝石是玻璃做的。它最多值500法郎。