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言う， 云う， 謂う， いう， ゆう
1. to say, to utter, to declare
2. to name, to call
3. to go (e.g. "the alarm went ping"), to make a noise
说，宣读，声明；称呼；发出(例如：警报响了‘叮’的一声)，发出声响
は
1. indicates sentence topic
2. indicates contrast with another option (stated or unstated)
3. adds emphasis
指示句子的主题；表示与另一选项（无论是否明确提及）形成对比；表示强调
と
1. if, when
2. and
3. with
4. used for quoting (thoughts, speech, etc.)
5. promoted pawn
6. indicates a question
表示引用
