careful是多音节吗

careful是双音节词。

He was always careful to toe the party line .他一直很服从党的命令。

Be particularly careful when driving at night .晚上开车要特别小心。

She buys many things by careful spending .她用很少的钱能买很多东西。

We must make a careful study of the matter ...这个问题很值得考究。