noun 下载 🔗分享 山脊, 刃脊 A very thin ridge of rock. Examples : "The mountain climber carefully traversed the knife-edged aretes, knowing one wrong step could lead to a long fall. " 登山者小心翼翼地横跨那些刀刃般锋利的刃脊,深知一步踏错就可能坠入万丈深渊。 geology geography nature 与AI对话词汇游戏阅读练习