noun 下载 🔗分享 线锯 A saw consisting of a metal frame having a fine-toothed narrow blade held under tension, used in making curved cuts. Examples : "The woodshop students used fretsaws to carefully cut out intricate patterns for their wooden ornaments. " 木工坊的学生们用线锯小心翼翼地切割出复杂的图案,制作他们的木制装饰品。 utensil machine 与AI对话词汇游戏阅读练习