那条蛇在沙滩上侧身蜿蜒前行，留下弯曲的痕迹。

The snake was ___sidewinding across the sandy beach, making curved tracks.

这台挖掘机采用蛇行方式在狭窄的隧道中前进，以避开障碍物。

The excavator was ___sidewinding through the narrow tunnel to avoid obstacles.

每当被问到敏感问题时，他总是拐弯抹角而不直接回答。

Whenever asked sensitive questions, he keeps ___sidewinding instead of giving straight answers.