sap/sæp; sæp/ n[U]1 liquid in a plant that carries food to all its parts 树液 The sap rises in trees in springtime. 春天树中的汁液向上流动.2 (fig 比喻) vigour or energy 元气; 精力 He's full of sap and ready to start. 他精神抖擞准备出发.
牛津英汉双解词典