1、
COPD 组、慢支组气道上皮细胞TGF-β1的表达明显高于对照组 ( 0.195±0.029 ),差异有显著性P<0.05.
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2、
None of the candidates can say for sure that he can get No.1 before he takes the BEC Higher.
我想没有任何考生在考BEC高级前可以百分百肯定地说他可以考得第一名。
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3、
Later, I went to get my certification and many people were signing up for BEC.
后来，去领证书时，正好有一群人在报名参加BEC考试。
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