They'll soon catch on. 他们很快就学会了

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
128. and will travel long distances to visit them.
     他们会长途跋涉 去找喜欢的树

来自《行星地球 第二季 第二集 Planet Earth S02E02 山脉》第 125 行