It has been clear for some time that global equity markets are bubbling again.
一段时间以来，全球股市正再次出现泡沫已经显而易见。
2
As it happens, the next great technology revolution in health care is even now bubbling up from the villages of Africa and may in time benefit the rich world too.
若情况果真如此，医疗照护的技术革新，甚至会在非洲村庄汩汩涌现，甚至也可能反过来嘉惠富裕国家。
3
It's shown that the efficiency of catalyzed degradation is directly proportional to the time of bubbling oxygen.