unable to clearly understand
冒着生命危险 at the risk of one's life 摸不着 unable to clearly understand (a situation etc) 摸不着头脑 to be unable to make any sense of the matter; to be at a loss ..
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unable to clearly understand
不能清楚地理解
以上为机器翻译结果，长、整句建议使用 人工翻译 。