This is a rough estimate, but it serves as a baseline that must be added to any desired threshold for testing.
这是一个大致的估计，但它必须作为基线添加到任何想要的测试限制中。
But now unfortunately I have come to realise just how rough it must have been for Grandpa to be away from his children for a year.
然而不幸的是，现在我开始体会到，你爷爷离开自己的孩子们一年之久，该是多么痛苦的事情。
People frequently made comments like, "That must be rough," and "How do you stand it?"
人们经常这样评论，“那肯定很难过，”，“你怎么受得了？”
Surface must be completely cleam. dry and free of dust and oil. If applieed on plastic, polish the surface with sand paper to make it rough.
接合面必须清洁，干燥，无灰尘或油污，若是塑料物件，应先用砂纸打磨其表面，使之粗糙。
A leader, once convinced a particular course of action is the right one, must have the determination to stick with it and be undaunted when the going gets rough.
一位领导者，一旦相信某一特定行动方向是正确的，必需要有坚持它的决心且在情况艰难时不受影响。
A leader, once convinced a particular course of action is the right one, must have the determination to stick with it and be undaunted when the going gets rough.
一位领导者，一旦相信某一特定行动方向是正确的，必需要有坚持它的决心且在情况艰难时不受影响。
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