在许多国家，葬礼上穿黑色是习俗。

In many countries it is the ___convention to wear black at funerals.

如今，人们倾向于避开传统和惯例。

Nowadays, people tend to avoid traditions and ___conventions.

打破惯例，公司在户外举行了年度会议。

Breaking with ___convention, the company held its annual meeting outdoors.