have visited him and entrusted him with their offspring. 并将保护后代的重任交给他

219. because he is a father...
     因为他作为一名父亲
220. ...and he's guarding some very precious eggs.
     正在保护珍贵的卵
221. For the last few weeks, females, one after the other,
     过去几周 雌蛙们相继来和他交配
222. have visited him and entrusted him with their offspring.
     并将保护后代的重任交给他
223. Some are now almost ready to hatch.
     有些卵快孵化了
224. There are several clutches on the leaf, and those at the top,
     叶子上有几团卵块 最上面的那一团
225. the most recently laid, are barely a day old.
     是最近产下的 还不到一天大

来自《行星地球 第二季 第三集 Planet Earth S02E03 丛林》第 222 行