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黙る， だまる

1. to be silent, to say nothing

保持沉默，不发一语

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悩む， なやむ

1. to be worried, to be troubled

感到担忧，感到烦恼

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ある， 有る， 在る

1. to be, to exist, to live 2. to have 3. to be located 4. to be equipped with 5. to happen, to come about

有，存在；有，拥有；发生；位于；配备

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こと， 事， 縡

1. thing, matter 2. incident, occurrence, event, something serious, trouble, crisis 3. circumstances, situation, state of affairs 4. work, business, affair 5. after an inflectable word, creates a noun phrase indicating something the speaker does not ...

tbd

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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

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