It is not lawful to park in front of a hydrant.

在消火栓停车是不合法。

Prize-fighting remained popular, though technically illegal, until the 1880s.

在19 世纪80 年代，业拳击比赛虽然严格来说是不合法，但一直很受欢迎。

Once brawny muscles have been acquired, whether licitly or illicitly, other genes might then be used to tune their activity.

一旦获得强健（不管是合法还是不合法），其它基因就可用来调整活动方式。