No satisfactory way exists... (Para. 1)
satisfactory: a. good enough to be pleasing, or for a purpose, rule, standard, etc.
This heater is satisfactory; it does give enough heat. 这取暖器效果令人满意，释放热量充足。
The design of the kitchen is satisfactory: the refrigerator is not next to the stove and there is enough space. 厨房的设计令人满意，冰箱不靠近炉灶，而且空间很大。