However, their ships rarely fly the flag of the home countries, choosing instead "flags of convenience".

然而，他们的货轮却挂“方便旗”，而很少悬挂本国国旗。

youdao

All seem to work well, though illegal fishing, mostly by ships sailing under frequently changed flags of convenience, remains a problem.

尽管非法捕鱼(主要方法是渔船频繁地变换方便旗)仍然是一个问题，三个协议似乎都发挥了良好作用。

youdao

The business for pirate ships "flying flags of convenience from landlocked nations has boomed", says the New Scientist.

CNN: All about: Global fishing

Flags of convenience now account for more than half the world's merchant tonnage, and they show no signs of slowing.

ECONOMIST: Bolivia waves the flag

With its rush into flags of convenience in search of low wages and taxes, shipping was a pioneer of globalisation.

ECONOMIST: Shipping