例句
	
		- 
			Today already have a retractable line, MP 3 headsets , optical mice, etc. products.
			今天已经拥有伸缩线, MP3耳机, 光电鼠标, 等等产品.
			
		
 
		- 
			Cheetahs , the champion sprinters of the animal kingdom , have non - retractable claws that give a similar advantage.
			猎豹是动物中的短跑之王, 它的脚爪是不能伸缩的,这给猎豹提供了类似的优势(译注:即和地面的接触面积更大).
			
		
 
		- 
			The car features a retractable aluminium hardtop, all - leather interior, and 18 in alloy wheels.
			这款车采用了可伸缩铝硬顶, 全真皮内饰, 18合金轮毂.