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....
把助听器调高一两个刻度就可以。Just crank up your hearing aid a peg or two.听觉障碍者反映数字电话会对助听器造成干扰。The hearing-impaired say digital phones interfere with hearing aids.助听器有助于克服听觉缺陷.A hearing aid helps to overcome defects in hearing....
The loss of the biggest ship in the Royal Navy shocked the Admiralty.皇家海军损失最大舰艇一事震惊了英国海军部。He noted the latitude and longitude, then made a mark on the admiralty chart.他记下纬度和经度，然后在航海图上做了个标记。Walden saw Churchill at the Adm...
Outside the protected environment of institutional care he could not survive.离开福利机构的照顾，离开这种受保护的环境,他将难以生存下去。These institutional reforms have gone furthest in Poland.这些机构改革在波兰进行得最为深入。Cultivar development may come to rely m...