为什么外国人对《圣经》深信不疑？ why do foreigners so believe in Bible ? do someone have doubted about it ? and why do some chinese do not believe in their religion as them?

translation into chinese (1)This increase in the output of both commodities measures the gains from specialization in production available to be divided between the two nations through trade . (2)……the opposite is true for Nicaragua (what's the meaning of the "ture "here ? ) (3)we examine the development of trade theory from the seventeenth century through the first part of the twentieth century Thank you very much if you translate it into chinese ^_^

Translation promblems (1)This increase in the output of both commodities measures the gains from specialization in production available to be divided between the two nations through trade . (2)……the opposite is true for Nicaragua (what's the meaning of the "ture "here ?The opposite i suit for the situation of Nicaragua ) (3)we examine the development of trade theroy from the seventeenth century through the first part of the twentieth century thank you for your help

I can not fully understand with a sentence, i need your help I was puzzled with a sentence when i read a passage called LES , would you like to give me a hand ^_^ . It is said a boy fall in love with a girl ,but the boy is so curious why the girl refused him when he asked her to allow him to walk her home, so one evening ,the boy dicide to follow her.However i can qiute see the meaning of "I carefully hide behind trees and bushes as i followes her down the trail beside the river", i can not fully make it clear,the "follow……down "is a phrase or follow here is matched with "the trail"?can you explain the construction and traslate the sentence into chinese for me ：） i am very appreciate for your help^_^