trees come into bloom. 万木逢春

250. they can always descend to lower warmer altitudes
     便会搬迁到温暖的低海拔地区
251. and not return there till spring.
     等到春天再返回此地
252. As the snows retreat
     冰雪消融
253. trees come into bloom.
     万木逢春
254. Cherry blossom.
     樱花
255. Rhododendrons -
     杜鹃花
256. here in their natural home they form great forests
     它们在大自然中形成大片灌木林

来自《行星地球 第一季 第二集 Planet Earth S01E02 山地》第 253 行