They needed 4 men to push a wooden fence post into the ground. 他們需要四個人來將那個木製的柵欄柱推到地下。
The most important severe hazard risk is the ground contact condition which arises in transmission poles, fence posts and railway sleepers. 危害木材最嚴重的情況,是在木材與地基接觸的條件下發生的,為通訊電杆,柵欄柱材和鐵路枕木。