是的，“ want”是最好的解释。

但是，又不能总是将“want”理解成“up for", 。
I want to be a doctor when I grow up.
I want happiness and world peace。

在这些例子中，你不能用"up for''。

这意味着 "eager to do something"或 "interested in doing something"。

不要将它与"up to doing something" 相混淆，这意味着在身体或精神上都有能力。 "I thought about taking a walk, but I'm still recovering from the flu, and I don't feel up to it yet".