Through Alien Eyes — Amy Thomson

Bound to the human race by a lifesaving Link and a sacred pledge of honor, two members of the alien Tendu species leave the safety of their homeland and board a spacecraft headed toward Earth. Isolated from humans because of their alien bodies, customs, and language, the Tendu must learn the ways of Earth in order to survive. But if their attempts at human convention are not enough to overcome the suspicions they have aroused, their voyage to Earth could cause more than a gap between the two worlds--it could bring about their ultimate downfall...