dictate/ dictionary/ diction...
1、dictate是动词、名词,表示命令、指示的意思。
Rules dictate that we can't do it.(规则规定我们不能这样做。)
The soldiers obeyed the dictates of their superiors without doubt.(士兵们毫无疑问地服从了上级的命令。)
2、dictionary是名词,字典、词典的意思。
Each of us has an English-Chinese dictionary.(我们每个人都有一本英汉字典。)
3、diction是名词,“用语、发声、发音”的意思。
The moderator's diction should be clear.(主持人的吐字要清晰。)