The ribosome reads the A/C/T/G code in groups of three, allowing us to derive a 64-letter "alphabet."

核糖体以三个一组的形式读取 A/C/T/G 编码，这样我们可以得出一个 64 字母的 “字母表”。

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For organized study groups, an invitation letter with details of the program, list of participants and an indication of who will be paying the associated fees and expenses.

学生团组需要递交包含有项目详情及团组成员名单的邀请信，并说明相关费用的支付责任。

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Large groups of people can share their discussions by using electronic lists to send every letter to everyone on the list.

一个组群里面的人可以利用电子的联系清单向组群里面的人发送邮件，他们通过这种方式开展讨论。

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These groups are known as Greek letter societies or as being part of the Greek system.

VOA: special.2009.09.25

Daisywheel divides the alphabet into eight groups of four, assigning each letter to a controller face button based on the position of the left-analog stick.

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Many of the groups that signed the letter were instrumental in securing a moratorium on geo-engineering research under the U.N.

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"These pages and images are approved by your moderators, while you regularly remove content such as pictures of women breastfeeding, women post-mastectomy and artistic representations of women's bodies, " read the letter, signed by dozens of women's groups from around the world.

CNN: Under pressure, Facebook targets sexist hate speech