⊙、对友情唯一不变的考验，还是长久不变的真诚。
The only constant of friendship to the test of, or permanent sincerity.
我希望你们会喜欢他的演讲，并且有所收获，对于丰富你们的生活会是长久不变的。
I hope that you will enjoy his lecture and get out of it something that will be a permanent enrichment of your lives.
我希望你们会喜欢他的演讲，并且有所收获，对于丰富你们的生活会是长久不变的。
I I hope that you will enjoy his lecture and get out of it something that will be a permanent enrichment of your lives.
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