例句 /

Self-locking triple-vein safety helmet of auto-movement with flat peak, usually for leaders on construction sites or safety inspectors.

Self-locking triple-vein safety helmet of auto-movement with flat peak, usually for leaders on construction sites or safety inspectors.

平顶三筋锁紧自调式安全帽,多用于工地领导及安全检查员佩带。