there is some light that comes through

　　但仍然有一些光能够通过

　　It is comforting to know that there is open water above you这能让你知道 上方没有船只

　　But as you approach the ship, which is tied to a pier, the light begins to fade但在接近停靠码头的船只时 光线就会开始变暗The steel structure of the ship blocks the moonlight船只的钢结构会遮挡住月光

　　it blocks the surrounding street lamps

　　还有周围的街灯

　　it blocks all ambient light

　　各种环境光都会被遮挡

　　To be successful in your mission, you have to swim under the ship and find the keel要成功完成任务 你需要游到船底 找到龙骨

　　the centerline and the deepest part of the ship也就是船下最深的那条中央线

　　This is your objective

　　这是你的目标

　　But the keel is also the darkest part of the ship当然 龙骨也是船上最暗的部分

　　where you cannot see your hand in front of your face在你眼前 你连自己的手都看不见

　　where the noise from the ship's machinery is deafening同时 船的轰鸣声震耳欲聋

　　and where it is easy to get disoriented and you can fail你很容易迷失方向 很容易失败

　　Every SEAL knows that under the keel

　　每个海豹队员都知道 在龙骨下

　　at the darkest moment of the mission

　　在任务中最为黑暗的时刻

　　is the time when you must be calm, when you must be composed自己需要冷静 需要镇定

　　when all your tactical skills

　　这时 所有的战术技能

　　your physical power and all your inner strength must be brought to bear身体能力和强大内心 都必须共同派上用场

　　If you want to change the world

　　如果你想改变世界

　　you must be your very best in the darkest moment你必须在最黑暗的时刻做得最好

　　The ninth week of training is referred to as "Hell Week"训练的第九周被称作"地狱周"

　　It is six days of no sleep, constant physical and mental harassment连续六天不准睡觉 持续的身体和心灵折磨

　　and one special day at the Mud Flats

　　还有特殊的一天去"泥滩"

　　the Mud Flats are area between San Diego and Tijuana"泥滩"位于圣地亚哥和提华纳之间

　　where the water runs off and creates the Tijuana slue's水在这里流出 创造出提华纳沼泽

　　a swampy patch of terrain where the mud will engulf you这里的泥潭能够将你吞噬