theend前面用哪个介词

the end前面用介词in.in the end中文意思是adv，终于，最后

These things were widely used in the end of the 20th and in the beginning of the 21st centuries.这些物品在20世纪末和21世纪初被广泛应用。

In the end， wiser counsels prevailed.高明的建议最终占了上风。