guide numberＩ短语¹⁴⁴⁹⁷²⁺² 基本例句 闪光指数 It has a Guide Number of just6, rather than the12 or13 we're used to seeing on entry-level DSLRs, but it does the job for social snaps and fill- flashand is a lot better than nothing. 闪光指数只有6，而不是象一般入门级单反的12或13。不过可以应付人文抓拍和补光的情况比没有强多了。 xitek