1.
We'll have a meeting every month.
咱们一个月碰头一次。
2.
However, it is the fist time for him to take an old wolf as prey.
追捕老狼，这却是头一次。
3.
He hit the wood again,
他又敲打了木头一次，
4.
disposable syringe with a needle
带针头一次性注射器
5.
It' s news to me, ie I haven' t heard about it before.
这事我头一次听说.
6.
This is absolutely the most appalling situation I've ever encountered.
这是我一生头一次遇到的可怕的情况。
7.
one revolution contact
转一转接触一次触头
8.
Once or twice she looked over her shoulder at me.
有一两次她回头看看我。
9.
This time he took out a golden axe.
这次，他捞出一把金斧头。
10.
This time he took out an iron axe.
这次，他捞出一把铁斧头。
11.
sterile hypodermic needle for single use
一次性无菌注射针头
12.
On one occasion Zeus suffered a racking headache.
有一次，宙斯头痛欲裂。
13.
How long do you wash the head once?
你多长时间洗一次头？
14.
Each cow normally produces only one calf at a time.
在一般情况下，一头母牛每次只能产一头牛犊。
15.
Each frown I meet only prepares me for the smile to come.
这一次皱起的眉头就是下一次舒展的笑容。
16.
Again the doctor asked him if the needle hurt, and again Heng shook his head.
于是医生再一次问他针头是否扎痛了他。然而，恒却再一次摇了摇头。
17.
'One of 'em pushed me once,' said the old man.
“有一个人曾经推过我一次，”老头儿说。
18.
Gemini goes around the neighborhood once, changes costumes and goes around again.
双子座每去邻居家一次就换一套行头。