每日商務英語 第449期:妥善保管 本文已影響 3.05W人 under lock and key 妥善保管ing-bottom: 100%;">英文釋義In a well-protected, very safe place.例句 The famous chef keeps his best recipes under lock and key so no one will steal them.這位名廚妥善保管着他的最佳菜譜,沒有人能偷走。