维修: keep in (good) repair; service; maintain 短语和例子维修良好 in good repair; 维修房屋 maintain houses and buildings; 维修汽车 service a car; 设备维修 maintenance of equipment; upkeep of equipment; 需要维修 need (pu
管道: [工业] pipeline; channel; tunnel; piping; canalis; pipe run; duct; conduit; conduit pipe; ducting; line of pipes; pipe alley 短语和例子污水管道 soil pipeline; 煤气管道 gas pipe; 消防管道 fire fighting pipeli
防护: protect; shelter; shield; guard; shielding; protection; proofing 短语和例子人体防护 [军事] physical protection; 防护植物不受阳光直接照射 shelter a plant from direct sunlight; 这个村庄有一条河防护着。 the village was defende
