We must be well prepared, there must be no slips.

我们必须好好准备，一定不要有差错。

《柯林斯英汉双解大词典》

The surface must be well prepared before you start to paint.

一定要把表面打磨好再开始粉刷。

《牛津词典》

The second key to being a good speaker is to follow the motto of the Boy Scouts: be well prepared.

成为一个优秀的演讲者，关键之二在于遵循童子军的座右铭：做好准备。

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The minister said he wants new teachers to be well prepared when they start working in schools.

BBC: NEWS | UK | Scotland | Teacher training to be 'flexible'

Of course, whatever the results, she will be well prepared to tout how great the first quarter was.

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However, Dr Rosemary Geller said the island would be well prepared to deal with a case of the respiratory virus.

BBC: Island 'prepared' for swine flu