convention

They abandoned the convention of the past.

他们抛弃了过去的习惯。

It's a social convention to say thank you.

说谢谢是一种社会习俗。

Bowing is a convention in some countries.

在一些国家，鞠躬是一种习俗。

Following conventions makes social life easier.

遵循惯例使社交生活更容易。

Some conventions are changing over time.

一些习俗随着时间在改变。

They attended the science convention last week.

他们上周参加了科学大会。

The annual convention is held in July.

年度大会在七月举行。

Many teachers go to the education convention.

许多老师去参加教育大会。

The convention center is very big.

会议中心非常大。

She gave a speech at the convention.

她在大会上发表了演讲。

The countries signed the environmental convention.

各国签署了环境公约。

This convention protects children's rights.

这项公约保护儿童权利。

Many nations follow the Geneva Convention.

许多国家遵守日内瓦公约。

The convention was agreed upon last year.

这项公约是去年商定的。

International conventions help maintain peace.

国际公约有助于维护和平。