should have set defend
应该设置防守
以上为机器翻译结果，长、整句建议使用 人工翻译 。
If breakdown endangers security of drive a vehicle, answer to take step actively, undertake handling, if cannot be handled immediately, should have set defend, make sure drive a vehicle is safe.
如故障危及行车安全，就应积极采取措施，进行处理，如不能马上处理，应设好防护，保证行车安全。
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