题目内容
________是在开敞式救生艇基础上加设刚性的封闭顶盖，以保护乘员不受冷热侵袭。 ______is a rigid enclosed roof attached to the open lifeboat to protect the occupants from cold and heat.
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郑和下西洋，比其他国家的航海家早了近千年。Zheng He’s navigation was nearly a hundred years earlier than the navigators of other countries.
中华祖先的航海活动早在新石器时代就已经开始了。The maritime activities of our Chinese ancestors began early in the Neolithic Age.
哥伦布最终到达了印度群岛和日本。Columbus has reached the “Indian Islands” and “Japan” in the end.
The countries such as the United Kingdom and the United States define the crew who is employed by the owner of the ship, serving on the ship under the command of the captain not cover the Master. 英国和美国等国家，通常定义的船员，是指船舶所有人聘用或雇用，受船长指挥且服务于船上的人员，不包括船长在内。
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