1. 摸索；探寻
    If you grope for something that you cannot see, you try to find it by moving your hands around in order to feel it.

    e.g. With his left hand he groped for the knob, turned it, and pulled the door open...
           他左手摸索着门把手，转动一下，然后推开门。
    e.g. Bunbury groped in his breast pocket for his wallet.
           邦伯里手伸进前胸口袋里摸索钱包。

2. 摸索着走
    If you grope your way to a place, you move there, holding your hands in front of you and feeling the way because you cannot see anything.

    e.g. I didn't turn on the light, but groped my way across the room.
           我没有开灯，而是一路摸黑走过房间。

3. 探索；努力寻求
    If you grope for something, for example the solution to a problem, you try to think of it, when you have no real idea what it could be.

    e.g. He groped for solutions to the problems facing the country...
           他在探求国家所面临问题的解决办法。
    e.g. She groped for a simple word to express a simple idea.
           她想找个简单的词来表达简单的想法。

4. 抚摸；猥亵
    If one person gropes another, they touch or take hold of them in a rough, sexual way.

    e.g. He would try to grope her breasts and put his hand up her skirt.
           他会试图摸她的胸部，还把手从她的裙子上向上移。