研究了黑苦莓叶片愈伤组织的诱导和再分化。
Callus induction and redifferentiation of black chokeberry leaf in vitro were studied.
战前意式咖啡总被机器弄坏因为机器总把蒸汽喷到咖啡粉上，在此过程中咖啡粉会被烧坏，就会产出又黑又苦的液体。
Before the war espressos had often been ruined by machines that squirted steam through the ground coffee, burning it on the way and producing a dark, bitter liquid.
黎族人争相向我兜售晚餐，全部是活的：白胸苦恶鸟，小白鹭，黑冠夜鹭，斑嘴鸭，这是唯一一种雌雄看起来都很像的鸭子。
The Li men jostle to sell me supper, all of it live: white-breasted waterhens, little egrets, a black-crowned night heron and a spot-billed duck, the only duck where male and female look alike.
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