基本解釋n.觀察孔光學瞄準器同根派生 sight-hole相關詞英漢例句Causes and prevention of boiler sight hole leakage 鍋爐檢查孔泄漏的原因及預防His strength in a crisis is an ace in the hole. 臨危不懼是他的看家本領。The oil tanker soon got out of sight. 油船不久就看不見了。She was sick at the sight of the blood. 她一見到血就感到惡心。The sentry was ordered to shoot on sight. 哨兵奉命一發(fā)現(xiàn)目標就射擊。sight-hole更多例句