Mothers show the cubs what to do about this. 母熊给小熊们做了示范

121. But just now, the bears have something else on their minds.
     但现在灰熊们还有其他事情要做
122. It's becoming warmer,
     天气转暖
123. and the bears are keen to shed their thick winter coats.
     灰熊急切地想脱下它们厚重的冬衣
124. Mothers show the cubs what to do about this.
     母熊给小熊们做了示范
125. They'll soon catch on.
     他们很快就学会了
126. Some trees, it seems, are particularly suitable for rubbing.
     有一些树似乎特别适合搓背
127. Bears have their favourites
     熊们都有自己的偏好

来自《行星地球 第二季 第二集 Planet Earth S02E02 山脉》第 124 行