present and past progressive
... Simple present,past,future(一般现在时,一般过去时,一般将来时) Present and past progressive(现在进行时和过去进行时) Future progressive(将来进行时) ...
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present and past progressive
现在和过去进行时
以上为机器翻译结果，长、整句建议使用 人工翻译 。
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The president and the Ravens safeties have mentioned all of this in the context of the semi-recent findings of chronic traumatic encephalopathy (CTE), a progressive degenerative disease, in the brains of football players both past and present.
FORBES: Have We Reached 'Peak Football?'