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(of a person's facial expression or mood) to suddenly become unhappy, worried, or troubled
阴沉下来, 变得忧虑
(of bodies of water or other surfaces) to become completely covered or blocked with ice due to extremely cold temperatures
完全冻结, 被冰覆盖
to show excessive or unnecessary concern, care, or attention to someone or something
过于关注, 过多的关心
to recover from an unpleasant or unhappy experience, particularly an illness
恢复, 克服
(of a threat, problem, concern, etc.) to exist and create a sense of worry or uncertainty about what will happen
笼罩着, 造成不安
(of wounds) to slowly grow new skin over the injured area as part of the healing process
愈合, 长出新皮肤
to significantly transform the appearance of something to update, enhance, or modernize its look
改造, 革新
to have a thin layer of mist or water droplets cover a surface, creating a hazy or obscured appearance
弥漫雾气, 起雾
