...from the moment they enter the world. 就要自己保护自己

295. They hatch from eggs...
     它们从蛋中孵出
296. they have scaly skin...
     有鳞状皮肤
297. and they are left to fend for themselves...
     自从出生的那一刻
298. ...from the moment they enter the world.
     就要自己保护自己
299. But there are differences.
     但确有不同之处
300. They have a much more efficient breathing system
     它们拥有一种更高效的呼吸系统
301. that continuously pumps blood across their lungs...
     能够持续将血液送至肺部

来自《我们星球上的生命 第一季 第四集 Life on Our Planet S01E04 冷血动物》第 298 行