以降

yǐ jiàng

since (some point in the past)

一雨成秋

yī yǔ chéng qīu

a sudden shower towards the...

一霎时

yī shà shí

in an instant

一转眼

yī zhuǎn yǎn

in the blink of an eye

事后

shì hòu

after the event

下一次

xià yī cì

next

一旦

yī dàn

in case (something happens)

一时半刻

yī shí bàn kè

(idiom) a short time; a lit...

九月份

jǐu yuè fèn

September

一早

yī zǎo

early in the morning

一遍

yī biàn

one time (all the way through)

一齐

yī qí

at the same time