this mainly involves the is
...每天早睡是个好习惯 » Early to bed every day is a good habit 这个主要涉及的是 » This mainly involves the IS 按啦啦啦啦啦啦啦啦啦啦啦啦啦啦啦啦啦啦啦啦啦啦啦啦啦啦啦啦啦啦啦啦啦啦啦啦啦啦啦啦啦 » As well, tra la la la la la la la...
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this mainly involves the is
这主要涉及到
以上为机器翻译结果，长、整句建议使用 人工翻译 。