1、She clenched her hands into tight fists, digging her nailsy into her palm.
她将手紧紧握成拳头，将指甲插入手掌中。
2、The mountain path was icy and treacherous, making each step a naily experience.
山间小道结冰而险恶，每一步都成了像踩钉子一样的经历。