问题描述：
They tried to think of a plan by which they could fulfill their task ahead of time.
1,It is a captivating base from which to explore Arizina's Grand Canyom.(亚利桑那州大峡谷） 这里的from which怎么理解啊
2,He seemed to be looking for words at his desk with which to convey his meaning as precisely as I had done.怎样理解with which,是convey his meaning with words吗?
1,It is a captivating base from which to explore Arizina's Grand Canyom.(亚利桑那州大峡谷） 这里的from which怎么理解啊
2,He seemed to be looking for words at his desk with which to convey his meaning as precisely as I had done.怎样理解with which,是convey his meaning with words吗?
问题解答：
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