[háo bú zài hu]
not to care a snap [pin; damn; dime; hang; curse; cuss; farthing]; completely unperturbed; disregard...; do not mind or care at all; make nothing of...; not at all perturbed; not care at all; not to take into account; without (the slightest) compunction
He did not care a snap to talk loudly in class.
他毫不在乎地在课堂上大声讲话。