美 
											[ˌɪmpər'tɜːrbəbl]
																
										
							
																																	"hitherto imperturbable, he now showed signs of alarm"
																							"an imperturbable self-possession"
																							"unflappable in a crisis"
																															
Weston looked at her, surprised at the emotion..this normally imperturbable woman was showing.
出自: A. Lewis
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