Vitamin B assists in red-blood-cell regeneration.
维生素B有助于红细胞的再生。
You are asked to swallow a capsule containing vitamin B.
你被要求吞下一颗含维生素B的胶囊。
The different types are designated by the letters A, B and C.
不同的类型分别用字母A、B和C标明。
In the observational studies we found that some of the B vitamins were beneficial.
在观察性研究中，我们发现一些维生素B是有益的。
Three other types of airspace, Classes D, C and B, govern the vicinity of airports.
其他三种领空，D、C和B类，管理着机场周围地区。
Reverse spelling (crumb for crum, a word in which b has no justification) is also a trivial mistake.
反向拼写（crum 拼成 crumb，b在这里没有理由存在）也是微不足道的错误。
After you hear a question, you must choose the best answer from the four choices marked A, B, C and D.
听到问题后，必须从A、B、C、D四个选项中选出最佳选项。
In the A, B, C, D and F grading system, the first four letters are typically considered passing grades.
在A、B、C、D和F评分体系中，前四个字母通常被认为是及格。
Orientation is simply facing in the right direction; navigation involves finding ones way from point A to point B.
定向只是面向正确的方向；导航包括找到从A点到B 点的路线。
To enter Class B airspace, such as an approach to a major metropolitan airport, an explicit ATC clearance is required.
需要持有明确的空中交通管制许可才能进入B类空域，如接近一个大都会机场。
To prove that factor a has no effect whatever on outcome b may be important in the sense that it refutes a hypothesis.
证明因素a对结果b没有任何影响可能是重要的，因为它驳斥了一个假设。
He was probably stationed in this provincial trading port, founded in 46 B. C. as a colony for veterans of the Roman army.
他可能驻扎在这个作为罗马军队退伍军人殖民地的省贸易港，该贸易港于公元前46年建立。
Understand what she's trying to accomplish and propose a Plan B that will make it happen without destroying what you've done so far.
了解她想要实现的目标，并提出一个B计划，在不破坏你目前所做的事情的前提下实现它。
They went on disputing till Brother B said he would bet twenty thousand pounds that the man would live thirty days, anyway, on that million, and keep out of jail, too.
他们就这样继续争论下去，直到B大哥说他愿意下两万英镑的赌注，赌这个人靠这一百万反正能活三十天，而且还不会进监狱。
The hard volcanic stone was a resource that had been in great demand for many years, at least since the rise of the Olmecs (a people who flourished between 1200 and 400 B.
坚硬的火山岩是一种多年来需求量很大的资源，至少从奥尔梅克人（一种生活在公元前1200年至400年之间的民族）崛起以来是这样。
For each of them there are four choices marked A, B, C and D. You should decide on the best choice and mark the corresponding letter on Answer Sheet 2 with a single line through the centre.
每题都有对应标记的A、B、C和D四个选项，请选择最佳选项并在答题卡2的相应字母中间划横线。
Slat and his team are working to improve System 001/B.
斯拉和他的团队正在努力改进 001/B 系统。
Between 221 and 210 B. C., he started the building of the Great Wall.
公元前221年至公元前210年，他开始修建长城。
Pinocchio sells his A-B-C book to pay his way into the Marionette Theater.
皮诺乔卖掉了他的识字课本，付了钱进了木偶剧院。
In his hands he had the A-B-C book for his son, but the old coat was gone.
他手里拿着给儿子的识字课本，但是那件旧外套不见了。
The question is: without enough these viruses how can B cells remember them?
问题是：没有足够的病毒，B细胞如何记住它们？
"I'll give you four pennies for your A-B-C book," said a ragpicker who stood by.
“我给你四便士买你的识字课本。”一个站在旁边拾破烂的人说。
After seven years of tests, on October 2nd, 2019, a machine called System 001/B came out.
经过7年的测试，2019年10月2日，一台名为“ 001/B 系统”的机器问世了。
Geppetto makes Pinocchio a new pair of feet, and sells his coat to buy him an A-B-C book.
杰佩托给皮诺乔做了一双新脚，把他的外套卖给他买了本识字课本。
Geppetto makes Pinocchio a new pair of feet, and sells his coat to buy him an A-B-C book.
杰佩托给皮诺乔做了一双新脚，把他的外套卖给他买了本识字课本。
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