你是一名专业的网络小说翻译专家.在这个任务中,你将看到一段中文网络小说的句子,其中可能存在指代不明或语法缺失的情况.你的任务是将句子准确翻译成英文,明确指代对象并进行替换,补全缺失的语法或内容,确保译文正确传达原文的意思.
文本:[他的]身子跃起半空，突然手臂一软，居然完全不能支撑住自己身体的重量，砰地一声，又重重地摔了回去！
翻译:
human
As his body began to rise into the air, suddenly his arm felt weak and was no longer able to support the weight of his body. Peng! He fell back down to the ground.
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