改进题：He had lived all his life in desert where every cupful of water might be a matter of life and death.

译文：他一生都生活在沙漠里，那里的每一杯水都可能关系着生与死。

改进题：He had lived all his life in desert where every cupful of water might be a matter of life and death.

译文：他一生都生活在沙漠里，那里的每一杯水都可能关系着生与死。

改进的译文：他一直在沙漠上生活，这地方每一杯水都得精打细算地用；一杯水可能是生死攸关的事。