In the shield tunnel section there are many challenges to overcome, such as river tributaries, workshops, highways and the Wutong River－all located at the underpass in sections of the project, the company said.
该公司表示，在盾构隧道段，有许多挑战需要克服，如河流支流、车间、高速公路和梧桐河——所有这些都位于项目段的地下通道。
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