Nonsequence
[地质]不连续, 沉积不断
🗣️ 情景例句
I have worked hard at my major subject.
我对主修课特别用功。
Don't be anxious if I'm late.
如果我回来晚些也不必担忧。
While he was eating, I asked him to lend me twenty pounds.
当他吃饭时，我提出向他借20英镑。