We have tried no stones unturned, even so, we have achieved far less than you. so, you should step up, all the learners will bow and hat off to you.
可是我们尽力了，虽然在努力但是效果不是像你那么明显，所以，你应该站出来，所有学习者都会向你致敬。
There are always methodological difficulties and stones left unturned.
总是有方法上的困难和人事未能尽到的情形。
There are always methodological difficulties and stones left unturned.
总是有方法上的困难和人事未能尽到的情形。
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