The biological half-life of a biological substance is the time it takes for half to be removed by biological processes.
A half life of a substance is the amount of time it takes to decay into half of its activity.
A half life of a substance is the amount of time it takes to decay into half of its activity.
让这更容易理解: The biological half-life of a biological substance is the time it takes for half to be removed by biological processes. 输出: