shortcutn.捷径；近路；快捷键v.抄近路；走捷径shortcut multiplication简捷乘法shortcut denitrification短程反硝化shortcut for fame and wealth终南捷径Shortcut Method of Confecting Gear齿轮配制的快捷方法shortcut biological nitrogen removal短程生物脱氮shortcut nitrification denitrification短程硝化反硝化shortcut nitrfication- denitrification短程硝化反硝化shortcut nitrification-denitrification短程硝化反硝化shortcut nitrifieation-denitrifieation短程硝化-反硝化shortcut nitrification and denitrifieation短程硝化-反硝化