有些警告一定得说，如：工欲善其事，必先利其器。

Some cautions must be mentioned—for example good tools are essential to do the job well.

《牛津词典》

“爸爸，你的脑袋一定也是空空如也。”聪明的儿子说。

"Daddy, your head must be empty!" said the bright son.

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要知足，因为不是自己想要的都可以得到，生活不一定如自己所愿。

Learn to be content, because life may not like what we want it to be.

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如没有能如愿而止，定须勉力而为。

If we can't do as we would, we must do as we can.

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在其它学科如生物、医学等研究领域将会有一定的应用价值。

It could be applied in other domains such as biology and medicine.

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如提前入住或推迟离店，均需酌情加收一定费用。

If early check in or late check-out, need to be appropriate, subject to a fee.

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在此基础上如购买多册可能得到一定的折扣。

Additional copies may be purchased at a discount.

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在此基础上如购买多册可能得到一定的折扣。

Additional copies may be purchased at a discount.

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