Variational principles play an important role in the formulation of many problems of mathematical physics.

District Fight Crime Committees continued to play an important role.

各分区扑灭罪行委员会在灭罪工作上,继续担当重要角色.

Steroids play an important role in bone growth, development and remodeling.

类固醇激素在骨骼的生长发育和骨重建方面起重要的作用.

Nonbiological degradation processes play an important role in the dissipation of many pesticides in soil.

非生物降解过程在消除土壤中的许多农药方面起着重要的作用.

We can play an important role in your overseas trade.

我们能在你方海外贸易中起重要作用.

Dam body material and structural pattern play an important role too.

坝体材料及结构型式也起着重要作用.

All this will play an important role in sustaining economic development.

这些对增强经济发展后劲将发挥重要作用.

They can play around a dog but only in the presence of an adult pack leader.

在一个合格的狗主人面前,他们可以与狗一起玩耍.

A little boy loved to come and play around it every day.

一个小男孩每天都会来围着它玩.

Up to 75 per cent of married men may be playing around...

多达75%的已婚男士可能在外拈花惹草。

You can't play around with children's futures like this.

你不能拿孩子的未来当儿戏.

Science means honest , solid knowledge, you can't just play around.

科学是老老实实的学问, 任何一点调皮都是不行的.

A little boy loved to nete and play around it every day.

一个小男孩每天都喜欢来到树旁玩耍.

Tell the children not to play around the building.

告诉这些孩子别在那栋建筑物附近玩耍.

It was years before I realized he'd been playing around.

多年以后我才察觉到他一直在拈花惹草。

If you play around with fire it will start to break out.

如果你玩火,就会引起火灾.

Don't play around with the vase, you could easily break it.

那花瓶很容易破碎,不要随便拿它玩.

You shouldn't play around with another woman's husband.

你不应该和人家的丈夫斯混.

Don't play around with the stereo.

不要乱调音响.

The old man told the children not to play around the pond.

老汉叫孩子们不要在水塘附近玩耍.

Obviously the children play around in these camps and it is a challenge.

孩子们在帐篷周围玩耍,很显然这是个挑战.