that the rains become torrential. 才会有如此倾盆大雨

8. The rainforest of Costa Rica.
   哥斯达黎加的雨林
9. As you might expect, it rains most days.
   不难想见 这里大部分时间都在下雨
10. But it's only during the wet season
    但只有在雨季时
11. that the rains become torrential.
    才会有如此倾盆大雨
12. And with them...
    伴随着滂沱的大雨
13. ..comes a most remarkable creature.
    一种非凡无比的生物出现了
14. Gliding tree frogs.
    滑翔树蛙

来自《行星地球 第三季 第四集 Planet Earth S03E04 淡水》第 11 行