lightsomeness英美网络 轻快(发光); 镜像亮度医学英英释义nounthe trait of being lighthearted and frivolousSynonym:lightnessthe gracefulness of a person or animal that is quick and nimbleSynonym:agilitylegeritylightnessnimblenessthe cheerful feeling you have when nothing is troubling youSynonym:carefreenessinsouciancelightheartedness