She picked up the gauntlet in her incisive Keynote Address to the Conference.在大会主题发言中，她言辞犀利地回应挑战。Luxury car firm Jaguar has thrown down the gauntlet to competitors by giving the best guarantee on the market.豪华轿车生产商捷豹公司推出...
其中最明显的是鲜艳的花瓣,花瓣下有一轮萼片.Most obvious of these are the brightly colored petals supported by a whorl of sepals.果扁球形, 直径1.7厘米, 基部托以宿存苞片和萼片.Fruit oblate, 1.7 cm in diameter, base with persistent bracts and sepals.花朵下面的萼片枯萎了.Th...
The payload of a ballistic missile is its warhead.一枚弹道导弹的有效载荷是它的弹头.It can hit a target with an atomic warhead.它能以原子弹头袭击目标.The warhead is the missile's payload, or cargo.战斗部是导弹的有效载荷, 即运载物....
雷酸可以看作是最简单的肟.Fulminic acid can be regarded as the simplest oxime.雷酸盐基本上不同于异氰酸盐和异氰三聚物的盐.The salts of fulminic acid differ basically isocyanic acid and its trimers.雷酸形成的一种盐或酯.An explosive salt of fulminic acid fulminate of...