...jet propulsion. 喷射推进

277. Being a vertebrate,
     作为脊椎动物
278. Dunkleosteus has the pace to catch up with them.
     邓氏鱼的速度能够追上菊石
279. But the ammonoids boast a trick of their own...
     但是菊石也有自己的本领
280. ...jet propulsion.
     喷射推进
281. Just what it needs to outmaneuver the young fish.
     刚好能够摆脱这条年轻的鱼
282. As it starts to circle...
     它开始绕圈
283. the ammonoid does the same...
     菊石也绕圈

来自《我们星球上的生命 第一季 第二集 Life on Our Planet S01E02 第一前线》第 280 行