Qi has a material existence independent of subjective consciousness and is the basic element of all physical beings. It is also the basis for the birth and existence of life and spirit. In addition， some thinkers have given a moral attribute toqi.Qi is in constant motion and change， and has no specific shape. Its concentration gives birth to a thing and its evaporation signals the end of that thing.Qi permeates all physical beings and their surroundings.
Part I1 the [ðə, ði:] art.这，那 ad.[用于比较级；最高级前]2 be [bi:] aux. v.(am,is,are之原型) vi.是;在3 of [əv] prep.…的；由…制成的；关于；由于4 and [ ænd] conj.
气泡膜是用低密度的聚乙烯材料加工而成的，是一种经常使用的包装材料，其作用是利用在双层塑料薄膜中形成带有空气的气泡，来防止撞击挤压，起到缓冲作用以保护包装产品，同时气泡膜也有隔热保温的作用，由于气泡中是空气，所以气泡膜具有体轻，透明等优点，广泛适应于各行各业包装产品或填充空隙之用。
接近尾声:即将结束。come to a close come to a conclusion。来自古英语 sumor，夏季，来自 Proto-Germanicsumur，夏季，来自 PIEsem，夏季，可能衍生自 PIE*semi，一半，半个。
