noun 下载 🔗分享 燕，崖燕，家燕。 Any of various passerine birds of the family Hirundinidae, which also includes swallows, that catch insects whilst flying. Examples : ""A martin flew quickly overhead, snapping up a mosquito in mid-air." " 一只燕子快速地从头顶飞过，在空中一口吞掉了一只蚊子。 animal bird nature biology organism 与AI对话词汇游戏阅读练习
noun 下载 🔗分享 磨石，研磨器。 A perforated stone-faced runner for grinding. Examples : "The miller carefully adjusted the martin in the mill to ensure a consistent grind of the wheat. " 磨坊主小心地调整了磨坊里的磨石，以确保小麦研磨的粗细均匀。 machine utensil architecture 与AI对话词汇游戏阅读练习
