He is good at reading and writing, but he wishes he knew how to understand and speak better.
他的阅读和写作是强项,但他希望知道怎样去理解和说得更好。
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。