也许正是这种对行动迟缓的恐惧解释了Fitch，一家大型信用评级机构，选择这周来降低希腊的主权债券等级一级，从A -进一步下调至BBB +。
That fear of acting too late may explain why Fitch, a big credit-rating agency, chose this week to lower Greece's sovereign-debt rating by another notch, from a - to BBB +.
继续以蛇为例，治疗师首先要做的就是，通过询问患者来建立一个列明了对应各种暴露情形的恐惧层次的等级序列。
Continuing with the snake example, the therapist would begin by asking their patient to develop a fear hierarchy, listing the relative unpleasantness of various types of exposure.
最大化恐惧面容等级。
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