funnel base

例句：

1. 1. The engineer used a funnelto drain the oil from the engine.
   工程师使用漏斗将油从发动机中排出。
2. 2. The construction of the tunnel required aprecise funnel base design.
   隧道的建设需要精确的漏斗基础设计。
3. 3. Thescientist conducted experiments using afunnel base to study fluid dynamics.
   科学家使用漏斗基础进行实验，研究流体动力学。