Knowledge like springs under the sand, to dig the deeper, spring more clearly.
知识好像砂石下的泉水，掘得越深，泉水越清。
Knowledge is like the spring water under the sand, more digging deeper water more clearly.
知识好象砂石下面的泉水，越掘得深泉水越清。
Spring is not dry, knowledge can not finish.
泉水挑不干，知识学不完。
Spring is not dry, knowledge can not finish.
泉水挑不干，知识学不完。
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