noun 下载 🔗分享 难题，难点. A difficulty. Examples : "The nodus of my math homework was a problem I couldn't understand, even after reading the textbook. " 我数学作业的难点是一个我即使读了课本也无法理解的题目。 situation 与AI对话词汇游戏阅读练习
noun 下载 🔗分享 翅痣, 结节. In the Odonata, a prominent crossvein near the centre of the leading edge of a wing. Examples : "As the dragonfly zoomed past, the sunlight glinted off the nodus on each of its wings. " 当蜻蜓飞速掠过时，阳光在它翅膀上靠近前缘中央的翅痣（结节）处闪烁着光芒。 biology insect animal part nature structure science 与AI对话词汇游戏阅读练习
