ignorant ['ɪɡnərənt] 词频2 词根: i

adj. 无知的，愚昧的;由无知引起的;无学识的;

💡 i=in不+gnor知道+ant...的 →无知的

"He's ignorant about modern technology."

近义：ignoramus, philistine, illiterate, silly, stupid, tomfool 反义：highbrow, initiate, sage, savant, scholar, stager

custom ['kʌstəm] 词频1 词根: cr-

n. 习惯，惯例;海关，关税;经常光顾;[总称]（经常性的）顾客; adj. （衣服等）定做的，定制的;

"This custom has been carried down from the 18 th century."

近义：practice, prevalence, style, stylishness, tradition, usage 反义：naturalness, sincerity, spontaneousness, unaffectedness, made, precast

guide [ɡaɪd] 词频1

vt. 引路;指导;操纵;影响; n. 指导者;向导;导游;有指导意义的事物;

💡 请 导游很“贵的”（拼音）

"For the more adventurous tourists, there are trips into the mountains with a local guide."

近义：leader, honcho, lead, orient, orientate, route 反义：misdirect, misguide, misinform, mislead, confound, confuse