把内存条对准主板上的插槽轻轻推入。

Align the RAM stick with the ___slots on the motherboard and push gently.

我预约了下午3点的牙医时间。

I booked the 3 pm ___slot for my dentist appointment.

这个项目还有两个空缺需要填补。

There are still two open ___slots to fill in this project.

这个U盘有四个存储位置，你可以选择任意一个保存文件。

This USB drive has four ___slots, you can choose any one to save your files.