v.排泄；分泌
It is a tribute to the capacity of the kidneys to excrete alkali. 這對腎臟排堿功能是個負擔(dān)。
One of the original bugs had undergone a mutation that caused it to excrete acetate, an organic chemical. 其中一個初始的細菌經(jīng)歷了一次變異，分泌出了一種有機化學(xué)物質(zhì)乙酸酯。
v.排泄；分泌
v.排泄；分泌
