èr cì 
		second (i.e. number two)
second time
twice
(math.) quadratic (of degree two)
		 
		
		
		
		
			 
		
				
		
			dì èr cì 
		the second time
second
number two
		 
		
		
		
		
			 
		
				
		
			èr cì gé mìng 
		second revolution
campaign from 1913 of the provisional revolutionary government (under Sun Yat-sen and the Guomindang) against Yuan Shikai 袁世凱|袁世凯 and the Northern Warlords
		 
		
		
		
		
			 
		
				
		
			èr cì qū xiàn 
		quadratic curve (geometry)
conic
		 
		
		
														
		
		
			 
		
				
		
			èr cì qū miàn 
		quadric surface (geometry)
		 
		
		
														
		
		
			 
		
				
		
			èr cì qū 
		quadratic curve
conic section (geometry)
		 
		
		
														
		
		
			 
		
				
		
			Dì èr cì Hàn zì Jiǎn huà Fāng àn 
		Second Chinese Character Simplification Scheme (second round of simplified Chinese characters, proposed in 1977 and retracted in 1986)
abbr. to 二簡|二简[er4 jian3]