One laboratory stock of Drosophila melanogaster has very reduced or vestigial wings.果蝇的一种实验品系,翅膀缩小,称为残翅.THREE NEW SPECIES OF NICRICOLOR SPECIES - GROUP OF DROSOPHILA ( LORDIPHOSA ) ( DIPTERA: DROSOPHILIDAE )黑色拱背果蝇种组三新种记述...
Mount Vesuvius is an active volcano.维苏威是一座活火山.AD and it was of Mount Vesuvius in Italy.公元79年,位于意大利的维苏威火山.Behind the city of Pompeii stood the 4000 - feet Mount Vesuvius.庞培城的后面矗立着4000英尺高的维苏维火山....
After about three months, I was no longer addicted to nicotine.大约3个月后，我就不再对尼古丁上瘾了。She had become addicted to golf.她已经迷上高尔夫球了。She was addicted to barbiturates.她对巴比妥酸盐产生了依赖性。...
Economic crises recur periodically.经济危机周期性地发生.The same old favorites recur year in year out with monotonous regularity.相同的决心以单调的规律年复一年地出现.He did not recur in thought to New York or the flat.他再也没去想纽约或者他的公寓....