work up什么意思？

work up的音标：work up的英式发音音标为：[wə:k ʌp]work up的美式发音音标为：[wɚk ʌp]...

You can really work up a sweat doing housework.做家务真的会让人大汗淋漓。Why do you leave all the hard work up to your mother?你为什么把所有难做的事都留给你母亲?They will work up all these stones in building the bridge.他们将把这些石子全部用来造桥....