emergency piston的用法和样例：
例句
- All the apprentices rushed to help fit the piston.
徒工们都跑过来帮助装活塞。 - They use a piston engine instead.
他们改用活塞发动机。
emergency piston的相关资料：
临近单词
emergency axe
emergency
Emergency Alternate Command Center
emergency decontamination measures
Emergency Event Information System
Emergency Vehicle Operators Course
Emergency Production Planning List
emergency-load-transfer signal
emergency decision-making system
Emergency Airborne Reaction System
Emergency Permission Authorization
EMERGENCY TREATMENT OF NECK TRAUMA
