There is the apparent paradox that the effective cause of the high proportion of the old is births rather than deaths.

有这样一个明显的似是而非的论点：造成老年人比率高的实际原因是出生人数而不是死亡人数。

youdao

Resistance of Hib to several of the more inexpensive but effective antibiotics is a growing cause of concern and provides additional impetus for expanding vaccine coverage.

Hib对许多价格较低廉但有效的抗生素的耐药性造成日益增长的关注，并为扩大疫苗覆盖面提供了额外的推动力。

youdao

He insisted that the method wassafe and effective, but said that it could cause lasting psychic damage to theinterrogators.

他强调说虽然审讯的方法是安全和高效的，但也有可能对审讯员造成长久的精神损害。

youdao

The Centers for Disease Control says HEPA filters are effective in clearing the air of many particles that cause disease.

VOA: special.2009.07.14

Probably the best argument against supporting Johnson is this: supporting a candidate based on a single-issue alliance is not as effective as supporting a cause.

FORBES: Rethinking Gary Johnson

While effective, it can cause severe short-term memory loss.

FORBES: Rewiring the brain

Next, parents need an effective strategy to address the cause.

CNN: A different kind of parenting resolution