The reactions of fish to AC can be distinguished into four stages: electrifying, electrotaxis, electronarcosis and electrocuting.鱼对交流电的反应可分成四个阶段: 感电 、 定向 、 麻醉和击昏反应....
你如果把信封倒过来, 钥匙就会掉出.If you turn the envelope upside down, the key will fall out.她试了一下, 秘密的夹底果然开了, 里边掉出4封信.She tried it, the secret compartment opened, and out fell four notes.火炉里掉出一块炽热的煤把地毯烧了.A hot coal fell out of the fir...
They have a normal body weight but see themselves as being fat...他们体重正常，但自认为偏胖。Either you pull your weight or we replace yon.你要是不尽力做好你的工作,我们便换人做你的事.The mule's back was hollowed by the weight of its burden.骡背被重负压得塌下了...
整个胃肠道具有某些共同的结构特点.The entire gastrointestinal canal presents certain common structural characteristics.急性溃疡形成是显著的胃肠出血的起因.Acute ulcerations were responsible for significant gastrointestinal bleeding.一例17 岁 男孩,有胃肠功能不良史,主诉腹痛...