Contractors must ensure that crane loads are not carried over the heads of any persons.
Contractors must ensure that crane loads are not carried over the heads of any persons.
《承包商》必须保证在吊货物时，不从正在下面工作的工人头顶上面越过。
Contractors must ensure that crane loads are not carried over the heads of any persons.
《承包商》必须保证在吊货物时，不从正在下面工作的工人头顶上面越过。