1. But there's many a slip 'twixt cup and lip, and no important graphene products are yet on the market.
但常言凡事都难十拿九稳,至今市场上也没有多少重要的石墨烯产品。

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2. Twixt rosy dawn and rosy dawn there came unto me a new truth.
在两次朝霞之间,真理给了我新的启发。

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3. Theres many a slips twixt the cup and the lip.
杯到囗边也会失手;功亏一篑。

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4. Theres many a slips twixt the cup and the lip.
杯到囗边也会失手;功亏一篑。

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