1. Which one is more terrifying, vacuity or drugs? 到底是空虚可怕还是毒品可怕?
2. Methods: The Kindney yin vacuity model was made with thyroid hormone. 方法：用甲状腺激素制造肾阴虚模型。
3. The novel gives a full display of the prevalent mental predicament of the "Freeters" of the modern society, namely, their pervasive loneliness and vacuity after losing ideals. 作品反映出日本现代“飞特族”（自由职业者）身上显现出的较普遍存在的心理问题，即丧失了崇高理想后精神上的隐形疾病-“孤独”与“虚无”。
英英解释
n.
1. the absence of matter
2. a region that is devoid of matter
3. total lack of meaning or ideas
