定义
over a period of time: 一段时间内
- "Smithson argues that stress starts to pose serious threats such as permanent damage to brain cells (which has linked high stress levels to alzheimer's disease and strokes) and high blood pressure (the link between stress and heart attacks) only when the stress is allowed to build up over a long period of time."
进一步了解…
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他们的意见 :
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