Gallamide
酰胺, 3, 4, 5-三羥基苯甲酰胺
??? 情景例句
Grandpa helped me yesterday afternoon.
昨天下午祖父幫我的忙。
If it hadn't rained so hard yesterday, we would have played tennis.
如果昨天沒下那么大的雨，我們就去打網球了。
Is this your shirt, Dave?
戴夫， 這是你的襯衫嗎？