Stage B is "the first volcanic activity and biological hazard";

阶段为第一次火山活动和生物灾难事件；

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The observation stated that there are the same changes of cellulase in different stage between B. xylophilus and B. mucronatus.

由实验结果可知松材线虫和拟松材线虫在生活史发育的不同时期食道腺纤维素酶的分布和变化是一致的。

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In the final stage of antibody development, antibody-producing B cells recognize specific parts of a pathogen and then mutate, or mature, so the antibody can bind to the pathogen more firmly.

在抗体发育的最后阶段，抗体生成B细胞识别病原体的特定部分，然后变异或者成熟，所以抗体可以结合病原体更加牢固。

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The break in hip-hop is that point in the song where the lyrics fade out, the instrumental and the percussion takes center stage, and the B-boys, the break-boys or the break- girls would come on to the dance floor and their thing.

NPR: Getting 'The Message' from Hip-Hop Lyrics

Stage Four: A and B become so fed up that they decide to replace C with a new sidekick who will make them feel good about themselves.

FORBES: The Downside to Having Female Cliques at the Office

According to Golborne, the first stage of drilling on Plan B has reached a depth of 1, 640 feet (500 meters) and will pierce the ceiling of the mine shaft where the men are trapped this weekend.

CNN: STORY HIGHLIGHTS