latex的坑

1.latex中有輸入德文、法文的處理辦法

https://blog.csdn.net/runtuandme/article/details/102566301

https://tex.stackexchange.com/questions/57743/how-to-write-%C3%A4-and-other-umlauts-and-accented-letters-in-bibliography

{\"a} {\^e} {\`i} {\.I} {\o} {\'u} {\aa} {\c c} {\u g} {\l} {\~n} {\H o} {\v r} {\ss} {\r u}