把那些穿梭航线与地下的磁悬浮链接，并在那些你必须建立昂贵隧道的地方留下地铁的槽。

Put those shuttle routes underground with the maglevs, and save the runway slots for the routes where you can’t justify building expensive tunnels.

youdao

我告诉你一件事。每天晚上，我们街区的面包店里都会开出一辆卡车，将成顿的面粉倒进地下的储藏槽。

Every night a truck pulls up to my neighborhood bagel place and pumps about a ton of flour into underground tanks.

youdao

采用窄缝槽物理模型来模拟地下水运动，具有形象、直观的优点。

The physical model of narrow slit has been adopted to simulate groundwater movement and it has many excellences in visualization and intuition.

youdao