Veratrylidene
亚藜芦基, 3,4-二甲氧苯亚甲基
🗣️ 情景例句
Show.
Show。
My grandma is 40 years older than me.
我祖母比我大40岁。
but unfortunately not all of us are born handymen.
但不幸的是，我们并非人人都是能工巧匠。