当潜艇指挥官使用潜望镜对海面态势进行评估的时候最容易被探测到也最容易被攻击。
Submarines are most vulnerable to detection when the submarine commander USES a periscope to assess the situation on the surface.
“儿童拐骗案呈现增长态势，而父母至少一方原本来自海外的家庭数量也同时增多。”他说。
"Child abduction is a growing trend as we have an increasing number of families where at least one parent is originally from overseas," he said.
股票市场也呈现上升态势。
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