Hawking's main concern was that a fleet of alien spacecraft could turn up wanting to strip mine the Earth for its bountiful resources.
霍金的主要忧虑是一队外星人飞船舰队可能会突然出现，想要将地球上储量丰富的矿藏洗劫一空。
Shipping is one of Greece's main industries, with Greeks controlling nearly 20 percent of the world's merchant fleet.
船运也是希腊支柱产业之一，该国控制了全球商船队的接近20%。
The galleon was the main ship in a treasure fleet carrying gold, silver and other valuable items from Spain's American colonies to King Philip V.
这艘帆船作为主船队，载满着从西班牙在南美的殖民地进献给西班牙国王费利佩五世金银珠宝。
All the main rapid reaches cannot meet the navigation expectation of ten-thousand-tonnage fleet.
各主要滩段均不能满足万吨级船队的通航要求。
According to the maintenance record from one fleet, the main vulnerable parts are determined.
根据某车队的维修记录，确定车辆的易损件。
The agreement to support Northwest's main fleet wheels and brakes, excluding the CRJ-200, will extend over 10 years.
该协议将支持西北航空公司的主要支线客机，不包括CRJ- 200的机轮和减速板，协议将延长10年以上。
Finally, by using the single ship optimization model, the ship type on the main line is chosen while the fleet deployment problem is simplified into linear programming.
采用线性规划法，将船队规划问题简化为线性规划问题，以年总营运费用最小为目标函数建立船队规划模型。
Finally, by using the single ship optimization model, the ship type on the main line is chosen while the fleet deployment problem is simplified into linear programming.
采用线性规划法，将船队规划问题简化为线性规划问题，以年总营运费用最小为目标函数建立船队规划模型。
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