jīng / guò / cháng / shí / jiān / sōu / xún / jiù / yuán / duì / de / tǐ / lì / jī / hū / qióng / jié / le

经过长时间搜寻，救援队的体力几乎穷竭了。

After searching for a long time, the rescue team was almost completely exhausted.