translation.en: It was, fortunately, one adult male whom I'd named David Greybeard -- and by the way, science at that time was telling me that I shouldn't name the chimps; they should all have numbers; that was more scientific.
translation.zh: 那是只成年的雄猩猩，我给它起名叫灰胡子大卫。 要知道，当时的科学界还不兴这样给动物起名字， 好像动物只能标号码，那样才科学。