He reached for a cigarette and lit it, fingers rocksteady.
他伸手拿了一支烟点着，手指纹丝不动。
《柯林斯英汉双解大词典》
2
When I'd missed a few times, he suggested I rest the rifle on a rock to steady it.
由于我几次都没打中，他就建议我把步枪放到石头上来保持稳定。
《柯林斯英汉双解大词典》
3
She was known especially for her verónicas, slow backward swings of the cape with both feet rock-steady as the bull raced towards her, almost upon her.