自愿zìyuànvoluntary; of one's own free willHSK 6PronunciationzìyuànExample sentence她自愿报名参加了这次国际志愿者项目。Tā zìyuàn bàomíng cānjiā le zhè cì guójì zhìyuànzhě xiàngmù.She voluntarily signed up for this international volunteer program.Read and choose an answerOne fixed sampleExplore a sample