For example, you could check to see if a user ID has been set in a session variable (showing that the user has actually logged in).

例如，可以检查一个会话变量中是否设置了一个用户ID(表明该用户已经登录)。

youdao

Showing his id as he floats head-down in the singing position, Frank displays the unique pattern of tail markings by which individual humpback whales can be recognized.

显示他的遗传素质本能冲动当他漂浮头朝下在唱歌位置，坦白的展示这独一无二的榜样通过在尾部的标志，个体的驼背鲸是能够识别的。

youdao

Honesty is a part of morals, referring to the consistency on the relation between ego and id or principle of sticking to truth showing the consistency on the relation among words, deeds and heart.

“诚”是一个道德范畴，是在表我对本我关系这一基本问题上的一致性或曰“真性”原则主张，要求体现物念及言行与自我本心相一致。

youdao

So, in terms of what it is that you need to prepare and bring with you for the exam, you need to bring your MIT ID, especially if you haven't been showing up regularly to your recitations and you aren't 100% sure if your TA knows exactly who you are, you need to make sure you have your MIT ID with you.

那么，关于你需要做哪些准备,考试可以带哪些东西，你需要带着你的学生证，尤其是如果你没有经常地参加,习题课,你不能百分之百保证,你的助教确实认识你，那么你更得确保自己到时带着学生证。

麻省理工公开课 - 化学原理课程节选

So convinced were the organisers of Mobile World Congress that they encouraged visitors to get an NFC pass for speedier entry to an event where security involves showing photo ID.

BBC: NFC - not for consumers?