Changes that take place in the physical world are in variably the result of forces.
发生在物质世界的所有变化无一不是力的'结果。
Other associated neurological symptoms, such as numbness and weakness, are variably present.
其他的相关神经症状，如麻木和无力等，表现则个不相同。
The stomatal index in the adaxial epidermis changed variably during development of cotyledons.
上表皮气孔指数的变化规律不明显。