The drug is variously known as crack or freebase. 这种毒品的叫法五花八门，有人称为crack，也有人叫它freebase。
Metaweb Technologies, a firm set up by Mr Hillis and his co-founders, Robert Cook and John Giannandrea, aims to do exactly that with Freebase, a website that sits on top of a new kind of database. 似曾相识的错觉。由于有大批的个人和组织拥有不公开但是却有价值的数据，所以希利斯认为下一步要做的就是利用互联网对数据进行共享。
[NOTE 4] Anhydrous magnesium sulphate can be used and rinse with a little ether to extract all the freebase out. [注4 ]无水硫酸镁可用于冲洗和一个小醚提取所有freebase了。
"In altered, more potent, cheaper forms (freebase, crack), cocaine is injected or smoked and is extremely addictive (see drug addiction) and detrimental to health." 古柯碱还可以注射法或化学烟雾法吸食,然上瘾性更强,对人体健康的伤害亦较大。
