Progress or travel along a certain route or in a specific direction.
前进或沿某条路线或在一个特定的方向旅行。
Specific studies as follows: 1. Make the objective and the technical route clearly.
具体研究内容如下：1。明确研究目的、技术路线及方法。
Specific studies as follows: 1. Make the objective and the technical route clearly.
具体研究内容如下：1。明确研究目的、技术路线及方法。
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