And not a minute too soon. 时机刚好

100. It's a tangled and dangerous world down here.
     这里的世界复杂而危险
101. But she can read the pattern of the stems overhead like a map,
     但她能够通过解读头顶的草茎来辨明方向
102. and so find her way home.
     从而找到回家的路
103. And not a minute too soon.
     时机刚好
104. There are mouths to feed.
     幼崽嗷嗷待哺
105. Her babies must fatten up quickly.
     她的宝宝们必须迅速长大
106. They need to harvest the summer grasses
     他们要趁着夏季食物充盈时

来自《行星地球 第二季 第五集 Planet Earth S02E05 草原》第 103 行