一时间

yī shí jiān

for a moment

到头来

dào tóu lái

in the end

一过性

yī guò xìng

transient

一日三餐

yī rì sān cān

to have three meals a day

一年期

yī nián qī

one year period (in a contr...

一度

yī dù

for a time

一时

yī shí

a period of time

一下儿

yī xià r

erhua variant of 一下[yi1xia4]

一生一世

yī shēng yī shì

a whole lifetime (idiom); a...

一世

yī shì

generation

一半天

yī bàn tiān

in a day or two; soon

一小阵儿

yī xiǎo zhèn r

very brief period of time