-应该是as吧,“随着,当...时”.随着你升的更高,空气变得更稀薄.
d和s紧挨着,一般是打错了.
我在网上搜索了好多,没有写AS的啊,全部都是ad的
ad明显讲不通。网上文章都是复制粘贴的,错了一个,另一个也错了。我看到了另一篇文章。Ifsomeoneaskyou,“Whatcolouristhesky?”Ithinkyouwillanswer“Blue”.I’mafraidthatyouwillbewrong.Theskyhasnocolour.Itlooksbluebecausewearelookingatbluesunlight.Thesunlightisshiningonlittlebitsofdust(灰尘)intheair.Istheskyfullofair?I’msurethatyouhaveaskedthisquestion,too.Weknowthatthereisairallaroundtheworld,butwecouldn’tflyveryhigh【becauseaswegohigher,theairgetsthinner】.Ifwegofarenoughawayfromtheearth,wefindthereisnoair.Maybewecananswersomequestionsnow.Whatisthesky?Whereisit?Itisallroundtheworld.Theskyisspace(宇宙空间).Inspacethereisnothing,butonlythesun,themoon,andallthestars.