... backscatter-to-extinction ratio 反散射消光比 backward difference 后差 backward scatter 反散射 ...
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转移性肺癌发病率高、患者愈后差，但其进展和转移机制目前仍未阐明。
Despite the high prevalence and poor outcome of patients with metastatic lung cancer the mechanisms of tumour progression and metastasis remain largely uncharacterized.
1944年二战荷兰饥荒期间仍在子宫中的婴儿，在智力测试中的表现比同龄人差，哪怕出生后60多年也一样。
Babies who were in the uterus during the 1944 Dutch famine of World War II did worse on mental tests than those of similar ages even 60 years later.
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