Durain
暗煤 (硬块)
🗣️ 情景例句
How's your son getting on with his English?
你儿子的英语学得好吗？
Man has not a greater enemy than himself.
人之大敌，自己而已。
The towers are further apart at the top than at the base, but this is no mistake.
两座塔楼的楼顶之间的距离比楼底之间的距离要大一些，但是这并不是错误。