Galactogen
半乳多糖
🗣️ 情景例句
He accepted an offer of help.
他接受了援助的建议。
Get me my coat, please.
请帮我拿下外套。
He turned on the light, but he couldn't see anyone. The thieves had already gone.
他开了灯，但不见一个人。小偷逃走了。