Ledkore
有铅垫板的沥青防水层
🗣️ 情景例句
Dr. Tyler's office. Good morning.
早上好，泰勒医务所。
When could we typically expect delivery?
我们希望常规的发货时间是什么时候呢？
But the historian attempting to reconstruct the distant past is always faced with a difficult task.
但是，历史学家企图重现遥远的过去可是一项艰巨的任务，