tā / huái / yí / yǒu / rén / xiǎng / àn / hài / zì / jǐ / yú / shì / jiā / qiáng / le / ān / quán / fáng / hù

他怀疑有人想暗害自己，于是加强了安全防护。

He suspected that someone wanted to harm him secretly, so he increased his security measures.