The physical meaning of dimensionless numbers cannot usually be formulated clearly.

Within the braces, you can include any formula.

在大括号内，可以包含任何公式。

It is not unusual for women to work a 40-hour week.

女性一周工作40小时并不少见。

Child car seats only cost about £10 a week to hire.

儿童汽车坐椅一周的租金才10英镑。

New recruits have been undergoing training in recent weeks.

最近几周，新兵正在接受训练。

Disappointingly, this show is only on view for a week.

令人失望的是，这次展览仅持续一周。

The soil must not be overwatered, especially during the first few weeks.

切忌土壤过涝，尤其在最初几周。

Every worker will be entitled to four weeks' paid holiday a year.

每位工人每年都能享受4周的带薪休假。

The idea of spending two weeks with him may seem heavenly.

和他一起度过两周的想法听起来似乎十分美好。

They drew up the design for the house in a week.

他们在一周内就画出了房子的图样。

The next few weeks will be a period of readjustment.

接下来的几周将是适应阶段。

Their water was turned off weeks ago without explanation.

他们的水在几周以前就毫无理由地被切断了。

This tree is 3 meters in girth.

这棵树周长有三公尺.

The column measures two feet around.

这根柱子周长2英尺.

What is the perimeter of this polygon?

这个多边形的周长是多少?

This tree has a circumference of 6 feet.

这棵树周长六英尺.

The given radius being 4 ft., find the circumference.

已知半径为四英尺, 求周长.

The circuit of the city walls is three miles.

环绕本市城墙的周长是叁英里.

The island is 3.5 km in circumference.

这个岛周长3.5千米。

The tree has a circumference of 6 feet.

这棵树周长6英尺.

It's a mile round the circumference of the field.

运动场周长一英里.