笑笑之笑0
A holds/ has/ maintains/ posesses/ ranks a(n) essential/ significant/ crucial/ critical status/ position in/within B都可以替换的~
你好,朋友们
Most importantly,many of your molecular biology lab's research achievements hold important(或者leading) positions in the world.
四十一度灰
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