阶梯( rung的名词复数 );职位的高层;(椅子等)横档;

With only two kinds of rungs, it might seem that DNA uses a two-symbol code.
由于只有两个梯级, 看起来好象DNA用的是双符号系统.
来源:互联网摘选The individuality of the organism is held in the running sequence of the differing rungs.
每个有机体的特殊性都是由梯上不同横档的排列顺序所决定的.
来源:互联网摘选It is often no easier for those just a few rungs from the top, either.
而对于距高层职位只差几级的人来说, 这也并非易事.
来源:互联网摘选In other times, that distinction might have gone to those on the lowest income rungs.
在其他时期, 这种情况更多地出现在收入最低的群体中间.
来源:互联网摘选His promotion has moved him up several rungs on the management ladder.
他获得提升,在管理阶层中提高了好几级.
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