Photoperiod produces little influence on the diapause of housefly larvae.光周期对家蝇幼虫滞育的影响不大.Larvae are parasitic on sheep.幼虫寄生在绵羊的身上。The larvae burrow into cracks in the floor.幼虫钻进了地板的缝隙里。The spatial distribution patterns o...
Looking still further ahead, by the end of the next century world population is expected to be about ten billion.再往前看，到下个世纪末世界人口预计将达约 100 亿。The population began to decrease.人口开始减少。A large percentage of the population is ...
Alex levered himself up from the sofa.亚历克斯从沙发上撑扶着站了起来。They levered the iron into the house.他们用杠子把铁块撬进屋里.The wounded soldier levered himself up on his elbow and shouted for help.那个伤兵用胳膊支起身子,大声呼救....
About 70% of the cocoa acreage is treated with insecticide...大约 70% 的可可树林地喷过杀虫剂。Apply the insecticide sparingly.慎用杀虫剂。The result of the same insecticide against different popution instar larva of Cnaphalocrocis medinalis...
Mr Dudley has pledged to give any award to charity.达德利先生已承诺将任何所获的损害赔偿额都捐给慈善机构。Sue and John were especially thrilled with this award.休和约翰对于获得这个奖项感到兴奋不已。She went to New York to receive the award in person.她亲自前往纽约领奖。...