在撞击过程中, 动量的变化是突然的,但非瞬时的.In a crash, momentum changes abruptly but not instantaneously.有时,在局部速度中可能出现瞬时脉动.Sometimes temporal fluctuation may take place inthe local velocity.它表示寻常光波前和非常光波前的瞬时轨迹.It represents the instantaneo...
He surrounds himself with all the trappings of gentility — dogs, horses, and fine paintings...他身边满是象征高贵身份的东西——狗，马以及精美的画。...ghastly good taste and suburban gentility.令人厌恶的高级品位和无聊呆板的绅士风度The hotel has an air of faded gentil...
名词mouse是 mice 的单数形式.The noun " mouse " is the singular form of " mice " .法语不同于英语,所有的名词都有性.French differs from English in having gender for all nouns.在the black cat这一词组中,形容词 black 修饰名词cat.In " the black cat " the adjectiv...