因此,及时诊断并阻断宫内感染是防治新生儿HBV感染的关键,已有不少研究表明,垂直传播包括父婴传播(P-FT)及母婴传播(M-FT),但长期以来,P-FT被M-PT及家庭内部接触传播所掩盖,未受到足够重视,关于P-FT的防治方法国内外报道不多,本研究采用酶联免疫吸附试验...
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Over the years, it lost 10 m (30 ft) off its top.
多年过去,它的顶端少了10米(30英尺)。
It has been suggested that there are enough blocks in the three pyramids to build a 3 m (10 ft) high, 0.3 m (1 ft) thick wall around France.
有人说这3座金字塔的所有石块足以围绕整个法国建造一面高3米(10英尺),厚0.3(1英尺)米的石墙。
When it was built, the Great pyramid was 145.75 m (481 ft) high.
大金字塔建造之初有145.75米(481英尺)高。
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