请问“I understand that this must be done right now.”怎么翻译?

请问I can understand you , 请问“I understand that this must be done right now.”怎么翻译? 请问understand可以引导宾语从句么?I can't understand (that) you treat her like that.这句话对么 one day you will understand that I “what means?i don not understand that? 请问but I don't understand what you said .I only want to express that I won't give up now .Do youknow? I understand You only will then understand how that,i will love I understand that the marrow of the sufferer in depth, 翻译I understand that you love me no longer existsft 翻译 ：I just didn't understand how that was fair. cause I don't think that they'd understand.. I understand that you love me no longer existsft I hope that tomorrow,you can understand my decision . You will never understand why I have that mighty proud I hope you understand me and didn't mean that. Teacher speaks so quickly that i can h____ understand him. please i cant understand that language什么意思