海关人员也可能因条码而得益，爱丁堡大学的进化生物学家马克•布莱克斯特（Mark Blaxter）如是说。
Another group that could benefit from barcoding are customs officers, says Mark Blaxter, an evolutionary biologist at the University of Edinburgh.
在某些偏远的地方，一些再不会光临这座城市的人向出租车司机和服务员付小费，但你却会因他的慷慨而得利，正如其他人会因你而得益一样。
In some faraway place, someone else is tipping a driver or waiter in a city they will never visit again; but you will benefit from his generosity, as someone will benefit from yours.
在某些偏远的地方，一些再不会光临这座城市的人向出租车司机和服务员付小费，但你却会因他的慷慨而得利，正如其他人会因你而得益一样。
In some faraway place, someone else is tipping a driver or waiter in a city they will never visit again; but you will benefit from his generosity, as someone will benefit from yours.
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