1 PHRASAL VERB 遮住；挡住；遮蔽 If one thing blots out another thing, it is in front of the other thing and prevents it from being seen. 遮住；挡住；遮蔽
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About the time the three climbers were halfway down, clouds blotted out the sun. [VERB PREP. noun]
当这3个登山者下到半山腰的时候，云层遮住了太阳。
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...the victim, whose face was blotted out by a camera blur. [be VERB-ed PREP.]
脸部经过镜头模糊处理而遮起来的受害人
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...with mist blotting everything out except the endless black of the spruce on either side. [VERB noun PREP.]
除了两边一望无际的黑压压的云杉以外，万物都被薄雾笼罩了
SYN obliterate, hide, shadow, disguise
2 PHRASAL VERB 抹去（记忆）；排除，挤掉（其他想法或记忆） If you try to blot out a memory, you try to forget it. If one thought or memory blots out other thoughts or memories, it becomes the only one that you can think about. 抹去（记忆）；排除，挤掉（其他想法或记忆）
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Are you saying that she's trying to blot out all memory of the incident?. [VERB PREP. noun]
你是说她想彻底忘掉这件事？
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The boy has gaps in his mind about it. He is blotting certain things out. [VERB noun PREP.]
这个小男孩对此的记忆中有几段空白。他想忘掉某些事情。
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She has suffered an extremely unhappy childhood, but simply blotted it out of her memory. [VERB noun PREP. + of]
她的童年极为不幸，对此她索性就不去想。