That is the professional organization for doctors here.

该协会是英国医生的专业组织。

That's the lowest grade given among all the professional and amateurs sport organizations.

这在所有职业和业余体育组织中为最低分。

Many of them go to college and play football and then we have a professional football organization – the National Football League.

他们中的许多人上大学并踢足球，然后我们有了一个专业的足球组织——国家橄榄球联盟。