gradually decrease year by year 逐年递减
decrease gradually 逐渐减少 ; 逐步减少
decrease with time gradually 随时间逐渐减小
After harvesting or collection, the artemisinin content of the leaves will gradually decrease.
在收获或采收之后,叶中的青蒿素含量将逐步减少。
For most survivors, symptoms of fear, anxiety, re-experiencing, urges to avoid, and hyper-arousal, if present, will gradually decrease over time.
对大多数幸存者来说,所出现的恐惧,焦虑,重复体验,力图回避,高度觉醒等反应会随着时间渐渐平复。
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