dà yǎn dèng xiǎo yǎn
(idiom) to look at each other, not knowing what to do
大
dà
big; large; great
眼
yǎn
eye (CL:隻|只[zhi1],雙|双[shuang1])
瞪
dèng
to open (one's eyes) wide
小
xiǎo
small
