deltaKK [ˋdɛltə] /ˈdɛltə/发音名词1三角洲The river forms a wide delta before reaching the sea.这条河在入海前形成了宽阔的三角洲。2希腊字母第四个字母In this formula, the small delta stands for a tiny change.在这个公式里,小写的 delta 代表极微小的变化。3变化量、差值专业Engineers track the delta between the two temperature readings.工程师会追踪两个温度读数之间的差值。4三角形物、三角形区域The wing narrows into a delta near the tail of the aircraft.机翼在靠近机尾处收窄成三角形。用这个字练口说→