1.A ballpoint pen is adequate for most ordinary purposes.
原珠笔适合最普通用途。
2.Keto-enol tautomerism is the most common tautomery phenomenon.Keto -enol themselves are the real chemical substance.
酮及烯醇互变是互变作用最普通现象,它们都是化学体。
3.Signal transmission can be quenched by inhibition of N-acyl-homoserine-lactone, leading to breaking the initial of pathogenic genes transcription and the expression of virulence.