By in-situ connectivity experiment, test studies were carried out on the source and flow pathway of the leakage water of Kunlun Mountain tunnel on Qinghai-Tibet railway line.

通过现场连通试验，对青藏线昆仑山隧道渗漏水的水源、流径进行了试验研究。

youdao

In addition to providing a pathway to legalize 12 million illegal immigrants, Gutierrez proposes to manage future immigrant flow by establishing a commission that ties foreign visas to labor market demand.

CNN: U.S. workers can't hide from competition