Underconcentration
浓缩不够, 浓缩(倍数)不足
🗣️ 情景例句
OK. But don't delay too long. Or that trip will be all booked.
好，但不要拖太久，否则会订满的。
They fought for the sake of their country.
他们为国而战。
But he has not promised to give you any of his blood.
但是他并没有答应给你他身上的任何一滴血。