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Australians serving on a US submarine which sunk an Iranian warship last week were ordered to their sleeping quarters by US Navy while the operation to fire torpedoes at the enemy target was underway to avoid participating in attack.，更多细节参见新收录的资料
print(area(r)); // 50，推荐阅读新收录的资料获取更多信息
此外，西井还先后助力阿联酋建设中东首个无人驾驶港口，与英国第一大港菲力斯杜港合作落地当地最大规模的“无驾驶室”新能源无人驾驶商用车队，深度参与全球智慧港口建设。