接下来，代物第和黑尔要判断一下影响——如果有的话——毛滴虫给湖鲟带来的影响。
Next, DeWoody and Hale would like to determine the effect - if any - the Trichomonas parasite has on lake sturgeon.
它们是由于1990年代从纳赛尔湖调水而形成的，是在尼罗河上的阿斯旺大坝后面形成的人工湖。
They were formed in the 1990s by diverting water from lake Nasser, an artificial lake formed behind the Aswan High Dam on the river Nile.
原产于亚洲的大头鲤鱼和银鲤鱼，20世纪70年代从南方鱼塘和污水处理厂逃逸以来，已经向五大湖扩散。
Bighead and silver carp - both native to Asia - have been migrating toward the lakes since escaping from Deep South fish ponds and sewage treatment plants in the 1970s.
应用推荐