Mutations
n. [遗] 突变；变化；转变（mutation的复数形式）
🗣️ 情景例句
It just depends on a number of things.
这得靠许多因素才能决定。
I'm going to but two gallons.
我要买两加仑。
and beyond six or seven they are worthless.
如果超过六七天，天气预报就没有了任何价值。