Before you can criticize an idea, you have to reference that idea.
在你批评一个观点之前，你必须提到它。
To get an idea of what you want to do, you have to first base it off a reference point.
要想知道自己想做什么，首先要基于相关点。
The paper provides reference idea how to select transducer for mine.
还对矿山如何选择变频器提供了参考意见。
The paper provides reference idea how to select transducer for mine.
还对矿山如何选择变频器提供了参考意见。
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