房子前面铺设了石板路。

There is a stone ___pathway in front of the house.

研究人员正在探索癌细胞生长的关键生化路径。

Researchers are investigating the key biochemical ___pathway involved in cancer cell growth.

学习新技能是实现职业发展的有效途径。

Learning new skills is a ___pathway to career advancement.