例句與造句

1. Spores are released back into freshwater system after its fish host dies, however the complete life cycle, host and vector interaction is not fully understood ( especially the ecology of the polychaete host ).
2. Virus-vector interactions ( i . e ., specificity of aphid species, acquisition access and retention times, semi-persistent manner of transmission, and transmission efficiency ), and the inability to transmit the virus via sap were established by Frazier ( 1955 ).
3. It's difficult to find vector interaction in a sentence. 用vector interaction造句挺難的