chew on

• • 仔细考虑，反复考虑；深思；细想：

    Tom likes to have some difficult matter to chew on.

    汤姆喜欢反复思考难题。

  • 反复地咬(或啃)；咀嚼；嚼碎：

    Babies who are getting new teeth like to have something hard to chew on.

    正在长新牙的婴儿喜欢咬硬东西。