noun🔗Share水线，吃水线 A line formed by the surface of the water on the hull of a ship when she is afloat; any of a series of short lines marked on the hull to show where the waterline would be under different loadings."The small boat had a dirty waterline, showing how high the water level had been when it was fully loaded. "这艘小船的水线很脏，显示出它满载时水面曾经到达的高度。nauticalvehiclesailingoceanmarktechnicalChat with AIVocabulary GamePractice Reading
noun🔗Share水线, 翼型弦线 A horizontal line indicating the shape of an airfoil."The engineer carefully studied the waterline on the airfoil model to understand how the wing would perform in flight. "工程师仔细研究了翼型模型上的翼型弦线，以了解机翼在飞行中的性能表现。technicalnauticalvehicleChat with AIVocabulary GamePractice Reading
noun🔗Share水位线，水痕。 A line showing where the water has been, usually a line separating dry land and wet areas; a watermark or tidemark."After the heavy rain, a dark waterline was visible on the garage wall, showing how high the water had risen. "暴雨过后，车库墙上留下了一条深色的水位线，显示着当时水位上涨的高度。nauticalenvironmentmarkgeographyoceanChat with AIVocabulary GamePractice Reading
noun🔗Share内眼线，睑缘。 The inner rim of the eyelid, just behind the lash line; primarily used in reference to the application of eyeliner."She applied the eyeliner carefully to her waterline for a more dramatic look. "为了让妆容更具戏剧性，她小心地把眼线画在了内眼线上.anatomyappearancebodypartChat with AIVocabulary GamePractice Reading
