美 
											[ɪk'spens]
																
										
							cost in money, time or effort
money spent in doing sth
																																	"at the expense of"
																															
																																	"he kept a careful record of his expenses at the meeting"
																															
																																	"For tax purposes you can write off the laser printer"
																															
This exuberance of money displayed itself in wantonness of expence.
出自: S. Johnson
The protein issue..was now insufficient for full normal expense of energy.
出自: U. Le Guin