For my math requirements, I'll be taking algebra, calculus, and trig.
数学的必修学分预定选代数、微积分、三角法。
But people who are cut off not only from foreign tourists, but even from their own countrymen can be hostile to travellers.
但是,那些不但与外国旅游者隔绝,而且与本国同胞隔绝的人们有可能对游客抱有敌意。