10 Do you understand? Call the assistant driller (A.D.) or derrickmen down to help us.
10 Do you understand? Call the assistant driller (A.D.) or derrickmen down to help us.
明白了吗？叫副司钻或井架工下来帮忙。
10 Do you understand? Call the assistant driller (A.D.) or derrickmen down to help us.
明白了吗？叫副司钻或井架工下来帮忙。