inexhaustible
adj
that will always continue; that cannot be used up 无穷尽的; 用不完的
an inexhaustible supply of sth 某物源源不绝的供应
My patience is not inexhaustible, ie I will eventually become angry or impatient. 我的耐心是有限度的.
Professor Ronald Bracewell, a leading American radio astronomer,argued in Nature that such a superior civilization, on a visit to our own solar system,