英语语法分析

Its characteristic is long do not fade, natural, beautiful, avirulent insipidity.

其特点是长久不褪色，自然，美观，无毒无味。

Newcastle disease virus (NDV) avirulent strain B95 was newly introduced from abroad.

新城疫病毒B95 (NDV B95)是从国外引进的一株热稳定性的天然弱毒株。

The invention of molecular labeling method of Pyricularia grisea avirulent gene belongs to the field of agricultural biotechnology.

本发明稻瘟病菌无毒基因的分子标记方法属于农业生物技术范畴。