vade mecum

美 [ˌvɑːdi ˈmeɪkəm]英 [ˌvɑːdi ˈmeɪkəm]

vade mecum

noun

from Latin formal（常备的）手册，便览
a book or written guide which you keep with you all the time, because you find it helpful

noun

a concise reference book providing specific information about a subject or location: Synonym: handbook enchiridion

数据来源：WordNet

1

Do you still remember last Christmas Day ? I still keep the wallet you sent to me as my vade mecum .

你是否还记得去年圣诞节？我仍将你送我的钱包随身携带。
2

A multinational community of law graduates , steeped in French bureaucratic jargon , and happiest away from the public gaze , will write " vade mecum " when they mean handbook , and " modalities " for arrangements .

一群来自各个国家的法学院毕业生，熟悉法语官僚行话，又乐得不受公众关注，他们会把手册写成“vademecum”，把安排写成“modalities”。