效率: efficiency...
可乘之机: an opportunity that can be exploited to sb.'s advantage, an opportunity that can be made use of by another to one's disadvantage, readily exploitable loopholes...
翻: turn upside down or inside out; turn over; reverse; overturn...
强劲: strong, powerful, robust...
汉语: Chinese language...
走: to walk, to go, to run, to move (of vehicle), to visit, to leave, to go away, to die (euph.), from, through, away (in compound verbs, such as ), to change (shape, form, meaning)...
一长一短: One long and one short...
超: to exceed, to overtake, to surpass, to transcend, to pass, to cross, ultra-, super-...
用品: articles for use, products, goods...
中学生: middle-school student, high school student...
