此: this字: character; word后面: at the back; in the rear; be ...用: 40分钟跑完全程 run the course in 4 ...不定: indefinite; indeterminate词: speech; statement; lines of ...不定词: infinitive不定词的: infinitival; infinitive不可用: na not applicable; not available只能用不定式: not a the后面不接时间状语: be about to（欧美人放在名字后面）姓: last name使用不可靠的: unserviceable使用不可靠性: unserviceability不可用部分: unavailable part不可用车辆: vehicle off the road vehicle off road不可用的: unusable不可用度: unavailability不可用钩: no hooks; use no hook; usenohook不可用秒: uas unavailable second; unavailable seconds uas; us unavailable seconds不可用能: unavailable energy不可用设备: device unavailable不可用时间: down time; unavailable time不可用位能: unavailable potential energy不可用小时: unavailable hours
