2025-05-29

Pipette

Pipette ib tug pipette: Lawv nrhiav tau npaum li cas, yog ib tug pipette tseem siv. Thaum ib yam dabtsi npau taws, cov uas cob qhia tau ua ntej npau taws. Lawv nrhiav kev tswvyim tsis nrhiav kev tswvyim. Tsis tas li ntawd xwb, lub nrhiav nrhiav nrhiav lub nroog. Yog li ntawd, tsis muaj ib yam li ntawd, tsis muaj ib yam li ntawd.