Mud bricks they use are not earthquake resistant, and dangerous because of its weight.
他们使用不抗震的泥砖，因为它的重量也可能导致危险。
Check mud weight every 15 minutes.
每15分钟检查泥浆比重。
Crew members must also pump mud of the proper weight into it.
此时要向井筒中泵注适当比重的泥浆。
泥浆比重多少？
Check mud weight every 15 minutes.
每15分钟检查泥浆比重30。
Call the roustabouts to help weight up mud.
叫甲板上帮助加重泥浆。
Call the roustabouts to help weight up mud.
叫甲板上帮助加重泥浆。
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