我们必须避免出现20世纪80年代那样具有破坏性的繁荣萧条交替循环的局面。We must avoid the damaging boom-bust cycles which characterised the 1980s.这是完善循环的最低限度人数.That is the minimum number necessary to complete the circuit.人类对硫循环的影响一直是很可观的.Man's effect ...
They usually require close management during calving.在生小牛期间它们通常需要精心看护.Our cows will be calving soon.我们的牛快生小牛了.Warm winters, however, may allow iceberg calving and high flow rates to continue.但是暖冬则会让冰山的高崩离率以及高流速保持不变....
雌配子体中的极核和卵核遗传上是同一的.The polar and egg nuclei of the female gametophyte are genetically identical.裂殖体和配子体与间日疟原虫相似.The schizonts and gametocytes were somewhat alike to Plasmodium vivax.'配'.''子''...