vac是什么意思音标:英 [væk]美 [væk]
n. 休假, 真空吸尘器
[电] 真空
n. informal term for vacation
vac的用法和例句：
1.I've been following you two around with a wet vac.
我一直拿着蒸汽吸尘器在你们后面清理呢
2.The seventh man, he wasn't wearing a vac suit.
第七个人 他没有穿真空防护服
3.It won't hold them long if they find vac suits.
他们要是找到了太空服可拖不了多久