动词失色，慌张起来; 惊慌失色
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1. 失色：lose count of 数的过程中忘记 | lose countenance 失色 | lose courage 丧失勇气
2. 失色, 慌张起来：put sb. in countenance 不叫人为难, 给人留面子; 鼓励某人 | lose countenance 失色, 慌张起来 | get out countenance 失色, 慌张起来