I'm a writer, yet I grope for the right words.

我是作家，但却还要搜索恰当的字眼。

Do you have to grope for words, or are you a fluent speaker?

你不得不搜寻合适的字眼，还是你是一位流利的演说者？

Darkness gives me dark eyes with which I grope for brightness.

黑夜给了我一双黑色的眼睛，我要用它去寻找光明。

I coast into the gas station, kill the engine, grope for my wallet.

我让车子轻轻溜进了加油站，关发动机，掏钱包。

New growth cones can grope for the sides' existing neurites, forming branches.

新的生长锥能够摸索四周现有的神经元，从而形成分支。