For climbs less than vertical hangerless machine bolts are recommended to reduce visual impact.

若攀登路线角度小于直角，应使用无挂环机械锚栓，以减低对景观的影响。

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For climbs less than vertical hangerless machine bolts are recommended to reduce visual impact.

若攀登路线角度小于直角，应使用无挂环机械锚栓，以减低对景观的影响。

youdao