Guanidyl
(=guanidino-)胍基
??? 情景例句
You may be offered coffee, and then you should immediately announce the reason for your visit.
他們會給你沖咖啡，然后你應該盡快說明來意。
Riches have wings.
財富難保。
A man who had broken his right leg was taken to hospital a few weeks before Christmas.
圣誕節前幾周，某人摔斷了右腿被送進醫院。