According to custom or established rules; precise; ceremonious; conventional.

正式的；一丝不苟的；礼仪形式的；循俗例的。

Having the outward shape without the inward reality.

徒具外表的；形式上的。

Regular; prim.

固定的；拘泥的。

Something formal, as a dance or gown.

正式的舞会；晚礼服。