A low, deep sound uttered, in pain or sorrow.

呻吟。

A deep rumbling sound expressive of disapprobation or ridicule.

哼(表示不赞成或讥讽的低沉声)。

A low, dismal sound, as of the wind.

低沉幽怨之声(如风声)。

To utter a deep sound of pain or sorrow.

呻吟。

To creak.

碾轧声。

To be oppressed.

受压迫；受苦。

To express by low, moaning sounds.

以低沉呻吟表示。