原级：guardrail
1. Traffic guardrails will be removed for pedestrians and bicyclists during the peak times, when students come and go off from schools.
2. guardrails
2. But safety barriers were incomplete, and nuts on guardrails were loose.
3. Residents blame the incident on the low guardrails along the canal towpath.
4. And he said the arrangement of the guardrails have to be often changed depending on the crowd that's waiting in line.
5. Both vehicles broke through guardrails along the side of the expressway and caught fire.
6. guardrails
6. Both vehicles crashed through the guardrails of the expressway and caught fire.
7. A drunken man was too intoxicated on Sunday night to realize that he had gotten his beer belly stuck between two guardrails of a gate.
8. After a bout of heavy drinking on Friday, the driver surnamed Fan got into his lorry and rammed the guardrails at high speed.