(误译)这个孩子像黄金那样宝贵。
(正译)这个孩子很乖。
as good as gold 是习语，虽然有很多as... as... 形式的词组可以直译，例如as... as ever (always) 可直译为“与往常一样......”，但 as good as gold 则有特殊的意义(“很乖”)，不能按字面直译。
“乖”的内涵和引申：
1. clever adj. 聪明的;机灵的;熟练的
Even the media occasionally try to trick the public with a clever April Fool story.
大众媒体偶尔也会以巧妙的愚人节故事来愚弄公众。
If such a clever person becomes arrogant or sarcastic, however, their words can hurt you.
如果这样聪明的人变得傲慢和自大，他们就可能会伤害到你。
2. alert vt. 使警觉，使意识到;警告
adj. 警惕的，警觉的;留心的
n. 警报;警戒，警惕
My horse was not above medium size, but he was alert.
我所骑的马，大小不过中等，但是感觉灵敏。
Be alert to students expressing overwhelming feelings in discussions.
警惕学生在陈述时的感情失控。
3. good adj. 好的;优良的;愉快的;虔诚的
n. 好处;善行;慷慨的行为
adv. 好
A good lather is half the shave.
好的泡沫是修面成功的一半。
The news is too good to be true.
那消息太好了，很难相信是真的。
4. perverse 乖张的，倔强的违反常情的
There could be perverse results, too.
这样做确实也可能产生荒唐的结果。
America's health-care system is a nightmare of perverse incentives.
美国的医疗保健系统具有反动力。
5. shrewd adj. 精明的;狡猾的;机灵的
n. 精明(的人);机灵(的人)
Yet in many respects it was a shrewd move.
然而，在很多方面，荷兰都有着良好的发展。
He was too shrewd to believe that it must exist.
他到是不至于愚蠢到相信那一定会存在。