on condition that与provided that的区别?

问题描述:

on condition that与provided that的区别?
详细点,

on condition that
adv.
如果
provided that
假如, 设若
provided that, on the(condition 前面一般会有定冠词)
condition that听起来比较随和一些,稍有商量的口气;尽管没有太大商量空间,这样听起来可能让人觉得舒服/礼貌点.