Chertification
[地质]燧石化
🗣️ 情景例句
The leader takes the first ten cards
指挥拿出上面的十张牌，
The cast of the play included a famous actor.
戏的演员组包括了一位著名的演员。
Oh dear! It's very warm in this clasroom, isn't?
天哪，这屋里真暖和，不是吗？