Efforescence
渗斑; 泛碱
🗣️ 情景例句
It's asking a lot.
那需要做许多工作。
It is too late to shut the stalbe door when the steed is stolen.
失马锁厩，为时已晚；贼去关门，为时已迟。
He telephoned the office yesterday morning and yesterday afternoon.
他昨天上午和下午把电话打到了我的