绳索的长度刚刚好能救到赫尔曼，救生筏上的四个人用力拉绳索，把他们平安的拉了回来。
The rope was just long enough to save Herman, and the four men on the raft tugged on the rope to pull them back to safety.
手拉单绳抓斗实用于单勾起重机上，是一种通过手拉绳索在空中能打开卸料的单绳抓斗，多用于船上。
Hand in single rope grabs crane practical, is a hand in the air through the cords of discharging single rope grabs can open to grab ship.
手拉单绳抓斗实用于单勾起重机上，是一种通过手拉绳索在空中能打开卸料的单绳抓斗，多用于船上。
Hand in single rope grabs crane practical, is a hand in the air through the cords of discharging single rope grabs can open to grab ship.
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