Mutations
n. [遗] 突变；变化；转变（mutation的复数形式）
🗣️ 情景例句
Birds are good pets, they can wake you up by singing in the morning.
鸟是很好的宠物，它们早上的歌声可以将你从梦中唤醒。
Don't be silly.
不要傻了。
I don't know how to express my gratitude.
我不知道怎样来表达我的感激之情。