The simulation experiment proves that this algorithm can prolong the lifecycle of the whole network at the least expense and has better adaptability and stability.
仿真实验结果表明，该算法能够以较小的代价提高整个网络的生存周期，有更好地适应性和稳定性。
However, efforts to control them are consistently undermined by the difficulty and expense of identifying mosquitoes-of which there are at least 3,500 species, many of them hard to tell apart.
然而，控制这些蚊虫的努力一直没有进展，关键在于鉴别蚊虫的难度和费用——至少有3,500种不同蚊虫，其中有不少很难加以区别。
However, efforts to control them are consistently undermined by the difficulty and expense of identifying mosquitoes-of which there are at least 3, 500 species, many of them hard to tell apart.
然而，控制这些蚊虫的努力一直没有进展，关键在于鉴别蚊虫的难度和费用——至少有3,500种不同蚊虫，其中有不少很难加以区别。
Deciding to get married is the easy part -at least, compared with the expense and effort that shopping for the engagement ring entails.
决定结婚是相对容易的部分——至少，比起购买订婚戒指要花的钱和精力来说是这样的。
Deciding to get married is the easy part - at least, compared with the expense and effort that shopping for the engagement ring entails.
决定结婚是相对容易的部分——至少，比起购买订婚戒指要花的钱和精力来说是这样的。
The more German industry excels, the more other Europeans feel that Germany's success comes at their expense, cracking open schisms within the euro zone just when the region can least afford them.
德国越成功，其他欧洲国家越觉得自己是牺牲品，欧元区在最脆弱的时候出现了裂隙。
At least 15 countries now host colonies, which frequently prosper at the expense of native species.
目前，至少15个国家受到外来物种的入侵，这种入侵是以牺牲本土物种为代价的。
Be careful of another's feelings. Wit and humor at the other person's expense are rarely worth it and may hurt when least expected.
照顾他人的感受。以损害他人为代价的风趣和幽默很不值得，可能会在不经意间伤害他人。
But shouldn't we at least offer to share the expense?
但难道我们是不是应该至少分担费用？
Wit and humor at the other person's expense are rarely worth it and may hurt when least expected.
以损害他人为代价的风趣和幽默很不值得，你可能受到最意料不到的伤害。
Wit and humor at the other person's expense are rarely worth it and may hurt when least expected.
以损害他人为代价的风趣和幽默很不值得，你可能受到最意料不到的伤害。
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