a.

1. 各式各样的；种种的
   manifold duties

   种种责任

2. 具有多种形式（或特点等）的；有许多部分的
   The uses of this machine are manifold.

   这台机器有多种用途。

n.[C]

1. 多种
2. 【机】歧管

vt.

1. 复写，复印
   manifold a letter with carbon paper

   用复写纸复写一封信

2. 使多样化

adj.

1. many and various.
2. having many different forms.

n.

1. a pipe or chamber branching into several openings.
2. (in an internal-combustion engine) the part conveying air and fuel from the carburettor to the cylinders or that leading from the cylinders to the exhaust pipe.