The source of the preposition yu in Oracle Bone inscriptions and in Sino-Tibetan;
介词“于”在甲骨文和汉藏语里的起源
The word"yan"is explained as "yushi"or "yu+object" in explanations of words in ancient books.
“焉”字在古书训诂中解作“于是”或“于 +宾” ;古籍异文中“焉”与“于是”相当 ;“焉”与“于是”对文、互文 ;焉字在语法意义上与“之”或相当于“之”的代词完全不同 ,而同于“于 +宾” ;此外 ,古汉语中的一些动词 ,既有及物动词的用法 ,又有不及物动词的用法 ,后面加“之”或加“焉”词义不同 ;从以上五个方面可以得出结论 :“焉”可以做兼词 ,兼介词“于”和代词“是”之用。
Concerning the function of yu between verbs and nouns (pronouns) in the agent sufferer sentences of ancient Chinese language, most of the syntactic scholars tend to consider it a symbol of passive voice.
古文献施受句谓语体词间之“于”的性能 ,语法学者大都视“于”为被动式之标志。
Equal to, Not equal to, Less than, Greater than, Less than or equal to, Greater than or equal to
等于, 不等于, 小于, 大于, 小于或等于, 大于或等于
of or relating to serving as publicity.
属于、关于或用于宣传的。
of or relating to or located in the endothelium.
属于、关于或位于内皮的。
of or relating to similar to bears.
属于、关于或类似于熊的。
of or relating to or given to insurrection.
属于、关于或惯于起义的。
of or relating to or at an equator.
属于、关于或位于赤道的。
Devote oneself to
献身于，致力于，专心于：
to the detriment of...
有损 [害] 于…,不利于…
Be keen on learning, good at communicating, courageous in undertaking, and brave in innovating.
乐于学习，善于沟通，敢于承担，勇于创新。
THE WORD“YU(于)”OF “YU SI(于耜),YU HE(于貉),YU MAO(于茅)”IN THE BOOK OF SONGS(诗经);
《诗·七月》“于耜,于貉,于茅”之“于”
of or concerning Qatar.
属于或关于卡塔尔的。
of or relating to a bolometer.
属于或关于测辐射热仪。
of or relating to glomeruli.
属于或关于肾小球的。
relating to or resembling a nipple.
关于乳头，或类似于乳头。
of or befitting a lord.
关于或适合于贵族的。
belonging or appropriate to the office of a judge.
属于或适合于法官职位。
of or relating to the science of virology.
属于或关于病毒学的。
of or relating to futurism.
属于或关于未来派的。