常见例句The sap rises in trees in springtime.春天树中的汁液向上流动。It was the beginning of the spring and the sap was rising in the boys.正当初春季节，勃勃的生气在小伙子们身上奔涌。Her long illness gradually sapped her strength.长期的患病使她的体力渐渐衰竭。 返回 sapped