to be unable to find something or someone

unexpected; hard to imagine; to have not anticipated that something would happen

to be unable to see; to be out of sight

to be unable to do something; cannot meet the requirements; impossible to achieve

unexpected; unimaginable; previously unimagined

Cannot be bought because it is sold out or otherwise unavailable.

to be unable to get or obtain

(idiom) literally "not to stop until one reaches the Yellow River"; meaning to refuse to give up until all hope is gone or one has reached a dead end; also used to describe being extremely determined to reach a goal

To be unable to reach, take, or obtain something; cannot get a hold of.

To be unable to predict or anticipate; unexpected.

to be unable to see or find someone or something

to be unable to reach or achieve a certain standard, goal, or level

to not give up until one reaches the end of the road, or to not stop until one reaches the Wu River where the historical Xiang Yu was defeated

Literally "don't lift the lid until the cooking is done"; a proverb meaning one should not act until the time is ripe or until conditions are fully mature.

Literally means one is not a proper person until reaching the Great Wall; used figuratively to mean that one must persist and overcome difficulties to reach a goal

not much better; equally poor in quality or situation

cannot be done; unable to be accomplished or handled; not feasible

to claim that something is not worth having because you cannot get it; a set expression based on the Aesop fable of the fox and the grapes

unable to hear; out of earshot

can't catch or grab