【theory音标】 英[ˈθɪəri] 美[ˈθiːəri]
【单词释义】 theory是什么意思：
n.[U]理论；原理；原则；[U,C]学说；[C]意见；看法；推测
[单词分级] 高考英语词汇
[单词复数] theories
【关联词/派生词】
theoretical adj.理论的；理论上的；假设的
theorem n.[数]定理；（能证明的）原理，法则
【theory形近词/近似词】
memory n.记忆，记忆力；回忆
glory n.[U]光荣，荣誉
ivory n.象牙；象牙制品；象牙色 adj.象牙制的；象牙色的；乳白色的
【单词例句】
◇ But without positive evidence, people suspected and rejected his view, saying the theory he put forward made no sense. Being much more strict with himself, he contributed himself to the case.
但是没有确实的证据，人们很怀疑并拒绝他的观点，大家都说他提出的理论毫无道理。他对自己要求更加严格，全身心地投入。
---- A Strange Disease
◇ MKII, a planet billions of kilometers away, is the origin of life in many religions. Physicists have proved the theory that its gentle climate and the pull of its gravity are similar to the earth’s.
MK二号是一颗几十亿公里外的行星，它在许多宗教里都是生命起源的地方。物理学家已经证明了它温和的气候和重力的牵引都和地球相似的理论；
---- Explore MKII
◇ Microwaves heat food by causing water molecules to vibrate, which produces heat. In theory, microwaves can heat body tissues in the same way they heat food, and at high levels, microwaves can cause burns and cataracts, according to the FDA.
微波通过引起水分子振动从而产生热量来加热食物。据FDA称，理论上，微波会以与加热食物相同的方式使人体组织受热，而且在严重的情况下，可能导致烫伤和白内障。
---- Is It Safe to Stand in Front of Microwave Ovens?
◇ According to the ecological valence theory (just one of a handful of color preference theories), humans appear to be fond of these colors because they're associated with environmental features we can benefit from and enjoy, such as clear skies, clean water, and vegetation.
根据生态效价理论（为数不多的‘颜色偏好理论’之一），人类之所以喜欢这些颜色，是因为它们与某些环境特征有关，而我们既能享受这些环境特征，更能从其中收益。晴朗的天空、干净的水流、翠绿的植被，不都是为我们所喜爱的吗？
---- What is the world's most relaxing color?
◇ Vliet's theory is that when the animals enthusiastically smack their jaws, the movement forces air through the crocodiles’ sinuses and ultimately empties tears into their eyes. Their eyes not only water but can froth and bubble, as Vliet witnessed at the alligator park, where some even teared up in anticipation of their meal of chicks, quail, and feed biscuits.
弗利特的理论是，当动物用力地咀嚼食物时，咀嚼的动作会迫使空气流经鼻窦，从而让眼泪涌出来。据弗利特在短吻鳄公园亲眼目睹，它们的眼睛不但会流泪，还会冒出泡沫，一些鳄鱼甚至在准备吃鸡、鹌鹑和饼干的时候就流下了眼泪。