Now it's time for the females to make their move. 现在是雌蛙展开行动的时候了

121. These large tree frogs
     这些大树蛙
122. spend most of their lives in the high canopy and only come down when it's time to breed.
     大部分时间在高高的树冠层生活 只有在交配繁殖时期才会下来
123. Once settled, they begin to serenade their unseen females.
     站定之后,他们开始给还没出现的雌蛙唱小夜曲
124. Now it's time for the females to make their move.
     现在是雌蛙展开行动的时候了
125. There's no shortage of suitors, but this female has already made her choice.
     虽然不乏众多的求爱者 可这只雌蛙已经做出了决定
126. She's heading towards the loudest call, because loud calls come from big frogs and big is best,
     她在朝鸣声最大的雄蛙走去, 对雌蛙来讲雄蛙叫得大声就是美
127. but to reach him she must run the gauntlet of a gang of smaller suitors.
     雌蛙要赶过去的话 她必须面对一帮较小的追求者的猛烈攻击

来自《行星地球 第一季 第八集 Planet Earth S01E08 热带雨林》第 124 行