出血可以是慢性和隐袭的，或是活跃和危及生命的。
Bleeding may be chronic and insidious or brisk and life threatening.
这种病可能隐袭发生，仅有发热为其唯一的临床表现。
This disease may develop insidiously, with fever as the only clinical manifestation .
这种病可能隐袭发生，仅有发热为其唯一的临床表现。
This disease may develop insidiously, with fever as the only clinical manifestation.
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