v.排泄；分泌

The function of the kidneys is to excrete waste products. 腎臟的功能是排泄代謝廢物。

It is a tribute to the capacity of the kidneys to excrete alkali. 這對腎臟排堿功能是個負(fù)擔(dān)。

One of the original bugs had undergone a mutation that caused it to excrete acetate, an organic chemical. 其中一個初始的細(xì)菌經(jīng)歷了一次變異，分泌出了一種有機(jī)化學(xué)物質(zhì)乙酸酯。