1.
Cross the road one at a time don't bunch up.
一次一个地过马路--别都挤在一起.
2.
About once a season.
大概一个季度去一次。
3.
We'll have a meeting every month.
咱们一个月碰头一次。
4.
I can only take care of one person at a time.
我一次只能发给一个人。
5.
Once he went to the theatre alone.
有一次，他一个人去看戏。
6.
movement once around a course.
围一个圈绕的一次运动。
7.
bimestrial:Occurring every two months; bimonthly.
一月两次的:每两个月发生一次的;一月两次的。
8.
Occurring every two months;bimonthly.
一月两次的每两个月发生一次的；一月两次的
9.
A nobleman and a merchant once met in a restaurant.
一次，一个贵族在饭店碰到一个商人。
10.
I go jogging three times a week.
我一个星期慢跑三次。
11.
Happening every two months.
每两个月发生一次的
12.
How many stops are there on our route ?
这次车一共有几个站?
13.
Are they in the same class?
是同一个档次的货吗？
14.
4 units from the first purchase
第一次购货的4个单位
15.
an intended trip abroad next month.
下个月的一次出国旅行
16.
Once per session
每个阶段作业比较一次
17.
Need secondary IP address.
需要一个次要 ip 地址。
18.
He carried six boxes at a time.
他一次拿六个盒子。