Transfution
n. 输血
🗣️ 情景例句
He's a friend.
他是位朋友。
The mechanic repairs cars.
机工修理汽车。
a trough (the lowest point), a height (the vertical distance from the trough to the crest),
波谷（最低点）、浪高（从波谷到浪峰的垂直距离）