tortuous
adj. 拐弯抹角的；冗长费解的；弯弯曲曲的，曲折的
例句
The only road access is a tortuous mountain route.
惟一的通路是一条弯弯曲曲的山路。
《柯林斯英汉双解大词典》
In the intergranular spaces of rocks, however, fluid must flow around and between grains in a tortuous path; this winding path causes a resistance to flow.
然而，在粒间孔发育的岩石中，流体必须在颗粒周围的曲折通道中流动；而这种曲折通道会对其流动产生阻力。
Life is but a hard and tortuous journey.
人生即是一段艰难曲折的旅程。
