Insition
移入物, 接种物, 添加物
🗣️ 情景例句
kick off your shoes, and sit down.
脱掉你的鞋子， 坐下来。
A watched pot(pan) is long in boiling.
心急水不沸；盼得越切，来得越迟。
He uses a lift to go up and down.
他乘电梯上上下下。