manifold|manifolds

技工正在检查汽车进气歧管的密封情况。

The mechanic is checking the seal on the car's intake ___manifold.

这个几何问题涉及研究复杂曲面的不同流形。

This geometry problem involves studying the different ___manifolds of complex surfaces.

发动机的进气歧管需要定期清洁以防止堵塞。

The ___manifold in the engine needs regular cleaning to prevent clogging.