By convention the deputy leader was always a woman.

按惯例，这一领导职务的副职总是由女性担任。

The world of advertising is obviously less bound by convention than the world of banking.

与银行业相比，广告业显然较少受常规的约束。

By convention, filters work on lines of text.

根据惯例，过滤器对文本的行起作用。

By convention the leader is always a man.

按照惯例，领导总是由男人担任。

By convention, the leader is always a man.

按照惯例，领导总是由男性担任。