11.确保：Assure, ensure, guarantee, pledge
12.有害的：Bad, baneful evil, harmful, detrimental
13.要求：Request, demand, needs, requisition
14.消除：Eliminate, clear, remove, clear up, take away, smooth away
15.导致：Lead to, bring about, result in, cause, spark off, conduce to, procure, induce, generate
16.因此：So, therefore, thus, hence, consequently, as a consequence, accordingly, as a result, because of this, as a result of this
17.增长至：Grow to，rise to，increase to，go up to，climb to，ascend to，jump to，shoot to
18.降低至：Dip to，fall to，decline to，decrease to，drop to，go down to，reduce to， slump to，descend to，sink to，slide to
19.保持稳定：Level out，do not change，remain stable，remain still，remain steady，be stable，maintain the same level，remain unchanged，be still，remain the same level，stay constant，keep at the same level，level off，stabilize，keep its stability，even out
12.有害的：Bad, baneful evil, harmful, detrimental
13.要求：Request, demand, needs, requisition
14.消除：Eliminate, clear, remove, clear up, take away, smooth away
15.导致：Lead to, bring about, result in, cause, spark off, conduce to, procure, induce, generate
16.因此：So, therefore, thus, hence, consequently, as a consequence, accordingly, as a result, because of this, as a result of this
17.增长至：Grow to，rise to，increase to，go up to，climb to，ascend to，jump to，shoot to
18.降低至：Dip to，fall to，decline to，decrease to，drop to，go down to，reduce to， slump to，descend to，sink to，slide to
19.保持稳定：Level out，do not change，remain stable，remain still，remain steady，be stable，maintain the same level，remain unchanged，be still，remain the same level，stay constant，keep at the same level，level off，stabilize，keep its stability，even out
