insupportable

1. ADJ If you say that something is insupportable, you mean that it cannot be coped with or accepted. 不能忍受的; 不能接受的[正式]

Too much spending on rearmament would place an insupportable burden on the nation's productive capacity. 过于庞大的重整军备开支会给国家的生产力带来难以承受的负担。

The thought was somehow insupportable. 这种想法在某种程度上不能让人接受。