问题描述：
英语语法不懂
The most economical age to capture an elephant for training is between fifteen and twenty years 这里的 to capture an elephant for training 做什么成分啊 作状语的话 是什么状语啊 翻译就不用了
The most economical age to capture an elephant for training is between fifteen and twenty years 这里的 to capture an elephant for training 做什么成分啊 作状语的话 是什么状语啊 翻译就不用了
问题解答：
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