经过抢救，许玉萌脱离了危险，但身体极度虚弱，精神萎靡不振。
Through intensive rescue, she finally went out of danger, but she was extremely frail and in low spirits.
埃博拉的特点是突然发高热、极度虚弱、肌肉疼痛、头痛和咽喉痛。
Ebola is characterized by the sudden onset of fever, intense weakness, muscle pain, headache and sore throat.
夜以继日地超负荷工作使他极度虚弱，但他仍然坚持和战友们一起战斗在大堤上。
Overworking day and night left him low, but he still kept on fighting together with his comrade-in-arms on the river bank.
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