Sherry`s translation 11

81. 有時要將理論付諸實行是件困難的事。(put...into practice)
Sometimes it is hard to put the theory into practice.
82. 老師的解釋把這首晦澀的詩闡明的很清楚。(shed light on...)
The teacher's explanation shed light on the complicated poem.
83. 我得遵守承諾，在下午五點和Cindy碰面。(keep ones's promise)
I should keep my promise to meet Cindy at five o'clock this afternoon.
84. 他們在那次會議上表揚(honor)世界最頂尖的科學家們。
They honored the top scientists in the world during that conference
85. 那篇文章是要提醒我們節儉(frugality)的重要性。
That article is to remind us of the importance of frugality.