水箱和屋顶都需要敷设严密的保温层。Water tanks should be well lagged and the roof well insulated.从防守高度严密的监狱的集体越狱a mass breakout from a top security prison他那论证的精确严密the nicety of his argument...
Certain proteins help copy nucleic acids by fashioning complementary strands that carry matching nucleotides.Proteins携带配对的nucleotide参与了nucleicacids的 精确配对复制是明确的.Deoxyribose A pentose ( five - carbon ) sugar that is a comp...