making是什么意思啊

　　We'd been making cakes and colouring the posters.

　　我们一直在做蛋糕和给海报涂色。

　　She's expert at making cheap but stylish clothes.

　　她擅长做便宜但雅致的服装。

　　The grinder is used for making precision tooling.

　　这台研磨机用于制作精细工具。

　　I am making a multimedia presentation for my science project.

　　我正在为我的科学项目做多媒体演示。