这个习俗是让人们在午夜钟声敲响时试着吃12颗葡萄。那些成功做到这一点的人就可以许个愿。
The custom is for people to try and eat 12 grapes as the clock strikes midnight. Those who are successful can make a wish.
计算机程序能否做到这一点是存在疑问的,至少,它一定会带来一些人们不想要的结果。
It's doubtful that a computer program can do that—at least, not without some undesirable results.
基于不砍伐的机会成本(它将常常占到总成本的大部分)所得出的评估结果表明,人们可用相对较低的成本做到这一点。
Estimates based on the opportunity costs of not felling, which will often make up the bulk of the total, suggest it can be done relatively cheaply.
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