(1) 行为， 举止;(待人的)态度 (way in which a person behaves; manners) [U]：one's～to (towards) sb 对某人的态度;one's bad/good/strange～不好/好/奇怪的行为;His～was in every way perfect. 他的行为无懈可击。be ashamed of sb's～为某人的行为感到羞愧;be puzzled by sb's～对某人的行为困惑不解;A school is judged by the～of his pupils.一所学校如何，从学生的行为举止看得出来。be on one's best～尽力举止得体;be of good～(法律用语)行为良好;

(2)习性，性能(way of acting or functioning) [U]：study the～of infants/apes/bees/metals/matter 研究婴儿/猿/蜜蜂/金属/物质的习(特)性;The compass is showing strange～.这罗盘工作反常。The little boat's～was perfect on the trial trip.这艘小船试航时性能良好。

→ be′havio(u)ral adj 行为的，举止的;be′havio(u)rism n 行为主义(学派);be′havio(u)rist n 行为主义者;

【辨异】behaviour与conduct都可指人的行为、举止。behaviour通常指用普遍接受的标准来衡量的行为、举止，如：His behaviour at the party was childish.(他在聚会上的表现有点孩子气。)而conduct的语体色彩较为正式，指从集体的角度，尤其是用理想的标准来衡量的行为、举止，如：Conduct is judged according to principles of ethics.(行为根据道德标准来判断。)