然后，当研究人员给小鼠注射一种药物，衰老细胞的死亡通路会则被激活。

Then, when the researchers gave the mice a drug, the death pathway would be activated in all senescent cells.

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肿瘤药物主要是通过抑制一种下调通路，从而简介导致细胞死亡。

Oncology drugs act primarily by inhibiting a deregulated pathway, which indirectly leads to cell death.

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20世纪80年代，竹子开花并死亡，实际上是每隔30至80年一个周期；但是人类活动阻断了大熊猫到低海拔地区获取其他可能食物的通路。

In the 1980s, it burst into flower and died, as it doesevery 30 to 80 years; but human activity had deprived the pandas of access tolower altitude species that would once have served as a back-up.

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