单词vade mecum
n.: （常备的）手册
网络: 旅游指南
（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
The spelling dictionary is a vade-mecum for all secretaries.
拼法字典是秘书必备的手册。
Although come to distant China, this still is Bei Kanglei"s very important vade mecum is tasted.
即使来到遥远的中国，这依然是贝康磊很重要的随身物品。
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。