Monomethyl
一甲基
🗣️ 情景例句
People are busy shopping and wrapping presents for relatives and friends before Christmas Eve.
在圣诞节前夜，人们忙着为亲朋好友买东西、包礼物。
The demand for our products has kept rising.
要求定购我们产品的人越来越多。
What are you doing?
你在干什么？