to load (= put) information or a program onto a computer before it is sold or used

Teachers preload lessons onto these wall-length computer screens. 教师将上课内容预先加载到这些墙一样长的电脑屏幕上。

The console comes pre-loaded with music and videos. 控制台预先安装了音乐和视频。

to fill a container, etc. with something before moving or sending it somewhere else

The vaccine is preloaded into syringes. 疫苗是预先装入注射器的。

On large planes, metal containers are preloaded with bags. 在大型飞机上，金属容器里面的袋子是预先装入的。

to have food or drink, especially alcoholic drink, before doing something or going out somewhere

You've got to preload before you get to a bar because you can't drink once you go in. 到酒吧之前要先预喝一些，因为进去之后就不能喝酒了。