to firmly stick to something

粘附, 附着
the branch of mathematics that comprises differentials and integrals

微积分, calculus 算
to occur at the same time as something else

同时发生, 发生重合
a situation in which two things happen simultaneously by chance that is considered unusual

巧合, 偶然
not enough in degree or amount

不足的, 不够的
incapable of being touched or physically grasped

无形的, 不可触摸的
not able to be endured or accepted due to being unpleasant or difficult

无法忍受的, 不可忍受的
difficult to manage, control, or resolve

难以管理的, 棘手的
to position oneself comfortably and cozily

安顿, 偎依
a bird that is too young to leave the nest built by its parents, especially one that has not yet learned how to fly

雏鸟, 雏仔
an article or report, especially in a newspaper, published soon after the death of a person, typically containing details about their life

讣告, 死亡通知
to insult or damage something that people greatly respect or consider holy, particularly a place

亵渎, 污辱
