unrealistic
adj. 不切实际的；不实在的
例句
The city has unrealistic pretensions to world-class status.
该城市不切实际地声称为世界一流城市。
《柯林斯英汉双解大词典》
It would be unrealistic to expect such a process ever to be completed.
期望完成这样一个过程是不现实的。
It is unrealistic to put undue pressure on ourselves by saying we are the best.
说我们是最好的来给我们自己施加过多的压力是不现实的。
