Things have gotten better, but she'll still make the occasional "b-d" or "5-2" flip.
虽然比前面那位好多了，但她还是会把b和d，5和2搞混。
2
Oil production from Daqing peaked at about 1.1m barrels per day (b/d) in 1997.
大庆的石油产量在1997年达到峰值——每天110万桶（b/d）。
3
That is even more expensive than it sounds, because each well produces only a small amount: perhaps 180 b/d, compared with as much as 7, 000 b/d from some Persian Gulf wells.