Collins Chinese Dictionary Plus (3rd edition), 2011:
一一 yīyī 副
in turn
- 对(對)记(記)者提出的问(問)题(題)，他一一做了回答。 Duì jìzhě tíchū de wèntí，tā yīyī zuòle huídá. He replied to each of the journalist's questions in turn.
一…一… yī…yī…
1 (表示整个)
- 希望我们(們)能一生一世在一起。 Xīwàng wǒmen néng yī shēng yī shì zài yīqǐ. I hope we will be able to spend our whole lives together.
2 (表示量少)
- 即使一分一秒她也舍(捨)不得浪费(費)。 Jíshǐ yī fēn yī miǎo tā yě shěbude làngfèi. She didn't want to waste even a second.
3 (表示对比)
- 这(這)里(裡)多数(數)家庭是一夫一妻，而不是一夫多妻。 Zhèlǐ duōshù jiātíng shì yī fū yī qī，ér bùshì yī fū duō qī. Most households here consist of one husband and one wife, and not one husband and several wives.
4 (表示连续)
- 他一瘸一拐(枴)地离(離)开(開)了足球场(場)。 Tā yī qué yī guǎi de líkāile zúqiúchǎng. He limped off the field.
- 小船一上一下地颠簸着(著)。 Xiǎo chuán yī shàng yī xià de diānbǒzhe. The little boat bobbed up and down.
5 (表示交替)一张(張)一弛 yī zhāng yī chí alternately tense and relaxed
- 他俩(倆)一问(問)一答，配合密切。 Tā liǎ yī wèn yī dá，pèihé mìqiè. Their question and answering was very tight.
6 (表示对应)
- 姐妹俩(倆)一左一右搀(攙)扶着(著)母亲(親)。 Jiěmèi liǎ yī zuǒ yī yòu chānfúzhe mǔqīn. The two sisters supported their mother, one on the right and one on the left.