雪莉小姐的
one substance consists of A & B,and A accounts for the main part/and A dominates.以...为主 的表达很多，这里根据具体语境，还是占了主要的部分这样翻比较好
笨笨的笨笨egg
Most importantly,many of your molecular biology lab's research achievements hold important(或者leading) positions in the world.
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