机器常裸露着，因此事故频仍。

Machinery was often unprotected and accidents were frequent.

当今社会是一个考试频仍的社会。

Now the society is a society of testing.

这一夜他恶梦频仍，还醒了一次，觉得奇寒彻骨，自以为是出了一身冷汗。

He passed a night of grisly dreams, waking once, chilled to the heart with what he took to be a cold sweat.