a straight line that touches a curve or surface at exactly one point, known as the point of tangency
切线, 切線
在几何课上，我们学习了如何画一个圆的切线，确保它只在一点接触圆。
not or barely relevant to something
切线的, 不相关的
演讲者的离题言论使谈话偏离了主题。
capable of being felt or touched
可触摸的, 有形的
他手中那本古书的有形重量让他更加欣赏它的历史。
an act that violates an agreement, law, etc.
违反, 违约
the back part of a gun's barrel where bullets are loaded
枪尾, 弹膛
安全程序要求在检查未装弹的武器时首先检查枪膛。
impossible to explain or justify
无法解释的, 无法辩解的
进入那座旧建筑时，她有一种无法解释的不安感。
remaining unchanged despite external influences
未受影响的, 不变的
她的举止冷静，周围的混乱对她毫无影响。
pure and free from any other elements or substances
纯的, 无杂质的
珠宝商确认那枚金戒指是未合金的，这使得它相当有价值。
relating to or typical of winter
冬季的, 冬天的
随着日子变短，他总是感到一种冬季的忧郁。
to wrongly or intentionally damage someone's reputation
诽谤, 中伤
如果谣言不受控制地传播，它们可以迅速诽谤一个无辜的人。
(of statements) intending to ruin someone's reputation with the use of unpleasant or false information
诽谤的
文章中含有诽谤性的声明，损害了当地商人的声誉。
a false statement damaging a person's reputation
诽谤, 诋毁
这位演员对社交媒体上传播的诽谤感到不安。
to annoy someone, often due to repeated actions or persistent issues
惹恼, 烦扰
在漫长的汽车旅程中，她小弟弟不断的问题开始惹恼她。
causing annoyance or weariness due to its dull or repetitive nature
烦人的, 令人厌倦的
翻阅冗长文件的每一页是一项烦人的差事。
to examine or study something in detail in order to explain or understand it
分析, 研究
a person whose job is to examine information or a particular subject in detail and interpret or evaluate it
分析师, 分析家
to remove the sex organs of a domestic animal in order to keep it from reproduction
阉割, 绝育
许多动物收容所要求宠物主人在领养前绝育他们的猫和狗。
not supporting or favoring either side in a conflict, dispute, competition, or disagreement
the process of counteracting or eliminating the impact of a previous action
中和, 对抗措施
和平条约是对两国多年敌意的中和。
