problematic：有疑问的，未解决的，未定的 

词根词缀：pro-前 +blem扔,抛 + -atic形容词词尾

• tepid
• tequila
• ter-
• tera-
• terabit
• terabyte
• terato-
• teratogenic
• teratology
• terbium
• tercentenary
• terebinth
• tergiversate
• teriyaki
• term
• termagant
• terminable
• terminal
• terminate
• terminative
• terminator
• terminology
• terminus
• terms
• term-,termin-