例句與造句

1. consequently, even though most juveniles die at sea, the return migration and death of adult salmon produce a large net flow of nutrients and energy from the ocean to stream and lake ecosystems
   盡管許多幼魚在海中死亡，但是最后能?游并死去的成魚，從海洋帶來了大量的養(yǎng)份與能量到溪流與湖泊生態(tài)系。
2. using the 2000 census data this paper estimates the size of the return migrants, describes the socio-economic characteristics of the return migrants and their differences from those of current migrants or non-migrants, and examines individual and household level determinants of return migration
   摘要本文利用我國2000年第五次人口普查的數(shù)據(jù)，估計返遷人口的規(guī)模并描述返遷人口的人口社會特征及其與現(xiàn)在的遷移人口與非遷移常住人口的差異，從個人因素、居住地類型以及家庭戶特征三個方面分別討論了返遷的決定因素。
3. It's difficult to find return migrations in a sentence. 用return migrations造句挺難的