「不甚了了」

(pos:短句)
<explanation>
yue:唔係好清楚, 唔係好明白
eng:not understanding thoroughly; not quite clear in one's mind
<eg>
yue:我對呢件事真係不甚了了。 (ngo5 deoi3 ni1 gin6 si6 zan1 hai6 bat1 sam6 liu5 liu5.)
eng:I don't know this incident quite well.