Some communicable diseases are transmitted only through the agency of insects.某些传染病只通过昆虫来传播.Some communicable diseases are transmitted only through the agency of vermin or insects.某些传染病只通过害虫和昆虫来传播.Communicable diseases h...
Communicable diseases have been a curse of mankind since time immemorial.自古以来,某些传染性疾病就是人类的灾祸.Some communicable diseases are transmitted only through the agency of vermin or insects.某些传染病只通过害虫和昆虫来传播.Some communicable dise...
The high laevorotation of L - cystine depends on a specially helical structure of its molecular.指出了L - 胱氨酸高度的左旋性是由其分子的特殊螺旋结构决定的.L - Cysteine is a, neutral, genetically coded amino acid, derived from cystine and found in ...
Airbags protect the driver in the event of a severe frontal impact.汽车若遇到正面猛烈撞击，安全气囊可以保护驾车者。The doors can be manually operated in the event of fire.发生火灾时,这些门可以手动控制.In the event ( that ) our team wins, there will be a cele...