Walkways allow visitors to enter the caves in perfect safety.
步行道使游客可以十分安全地进入那些洞穴。
The walkways and staircases are absolutely crucial to the project.
走道和楼梯是项目的重要部分。
Wooden walkways allow visitors to closely approach the Grand Prismatic Spring.
木制人行道容许游客更近地接近大棱镜温泉。
Wooden walkways allow visitors to closely approach the Grand Prismatic Spring.
木制人行道容许游客更近地接近大棱镜温泉。
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