Now 's a good time to give water jogging or water aerobics a try .
就趁现在去试试水中慢跑或者水中有氧运动。
But as I 've said , he didn 't give up easily , and he doggedly learned again how to fasten his belt ; to peck out sentences on his computer ; to walk alone , one foot dragging , to the university pool for water aerobics .
