颊窝毒蛇的毒牙是长的空心管子.The fangs of pit vipers are long, hollow tubes.只有四分之一的蛇具有毒液和毒牙.Venom and fangs are found in only a quarter of all known snakes.在蛇的进化史上,毒牙的出现是新的进步.A more recent advance in the evolutionary story of snakes i...
那块布料是用棉纱织成的.The fabric is woven of cotton.一汉克的棉纱长达840码.A hank of cotton yarn measures 840 yards.船上有丝绸 、 瓷器 、 银器 、 棉纱及各种货物可供买卖或交易之用.On board, there were silks, porcelain, silverware, cotton, and other goods for sale or tr...
A miracle is something that seems impossible but happens anyway.奇迹就是看似不可能，却发生了。It is impossible to say who struck the fatal blow.很难判断是谁给了致命的一击。It's impossible to assess how many officers are participating in the slo...
Molly had cringed when Ann started picking up the guitar.安开始弹吉他时，莫莉感到有些难堪。They confirmed by wireless that she was picking up survivors.他们通过无线电证实她在营救幸存者。Young people are picking up ideas about good drugs and bad drugs.年轻人...