This is going to be a tough lesson but a valuable one.
这是艰难但又极富价值的一课。
This is going to be a tough lesson, but a valuable one.
这是艰难但又极富价值的一课。
These firms have been given a tough lesson in the need to diversify their markets.
这些公司因缺乏多元化市场而遭受惨痛的教训。
The on-going drought should be a tough lesson for the meteorology departments and organizations.
气象部门和组织必须从这场持续的旱情中吸取惨痛的教训。
So that was a tough way to learn that lesson, but you do learn the lesson.
以这种方式吸取教训着实很痛苦，但是你必须这么做。
And, if it is right, this study also confirms a lesson learned by generations of bar-room tough guys and schoolyard bullies: if you want attention, get angry.
如果这个结论是对的，这个研究就同时证明了一条从监狱的恶棍与校园中的恃强凌弱者那里学到的道理：想不受人欺，愤怒吧！
For Mr Obama, the lesson is simple enough: sharpen up, and prepare for a tough two years.
对奥巴马而言，教训简单不过：改善自身，迎接今后两年的艰巨考验。
For Mr Obama, the lesson is simple enough: sharpen up, and prepare for a tough two years.
对奥巴马而言，教训简单不过：改善自身，迎接今后两年的艰巨考验。
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