一丝不苟yī sī bù gǒu
not one thread loose (idiom)一举两得yī jǔ liǎng dé
one move, two gains (idiom)一向yī xiàng
all along, the whole time, constantly一如既往yī rú jì wǎng
just as in the past (idiom)一帆风顺yī fān fēng shùn
single sail, gentle wind (idiom)一度yī dù
for a time, at one time, one time一律yī lǜ
same, uniformly, all, without exception一流yī liú
top quality, front ranking一目了然yī mù liǎo rán
obvious at a glance (idiom)