【紧急】“business as usual”和“learn by doing”分别是什么意思?

请问：business as usual 是什么意思? learn by doing. 是什么意思? Learn by doing as usual 和 than usual 的区别以及他们分别的用法 It will not be business as usual in the learn by doing的解释 learn by doing 的音标 learn by doing中by的意思 than usual 和 as usual 的区别在哪? learn...by oneself是什么意思? 英语翻译和as usual一个意思吗 We should alawys remeber "Learn by doing.