Success has been attributed to a strong research component, an emphasis on epidemiology and surveillance, and the flexibility to adapt to new findings and change course when needed.
成功可归因于强有力的研究工作，对流行病学和监测的重视，灵活适应新的发现以及在必要时转换路向。
Glass fiber rod is also more common, a glass fiber rod has a lot of series, the more rough the more strong, but the relative flexibility is relatively weak.
玻璃纤维杆也是比较常见的一种，玻璃纤维杆有很多系列，一般越粗刚性越强可是相对的柔性越弱。
The data model has strong extention and flexibility.
该数据模型有很强的可扩充性，十分灵活。
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