Nerving thy heart and trembling hand to do.

让你的心，你颤抖的手。

It looks like she's nerving herself up to step forward.

好像她正在给自己以力量，一步步向前。

She drank some water nerving herself for a more terrible ordeal.

她喝了几口水，使自己镇定，准备应付一场可怕的。