so as to和in order to的区别

But___ ___ ___let the tall ships pass,lt is necessary to have a modern bridge. 为什么划线部分中用的是in order to而不是so as to？？

in order to 和 so as to 有何区别 关于，SO AS TO和IN ORDEN TO in order to 和so as to 有什么区别 in order to和so as to在用法上有什么区别? in order to与so as to的区别？ so as to 与in order to 的区别 in drder to 与so as to的区别 英语中的so as to;so that;in order to等等的使用区别？ so as(not)to 与 in order(not)to 的区别 请教in order to 的书面语替换短语 so as to 除外