...the submarine's propulsion system.潜水艇的推进系统We were trying to plot the course of the submarine.我们试图标绘出潜艇的航线图。...submarine caves.海底洞穴Submarine and carrier aircraft were the menaces the great guns could not fight.潜艇和...
It was not a statutory company but a de facto form initially.它最初是以一种事实上的而非法定的公司形态出现的.During that time, Snowboarding appealed initially to a small group of surfers, skateboarders, and backcountry enthusiasts.那时候, 单板滑雪吸引了一...