[lemma=simultaneously] [□] □
[lemma=simultaneously] [□=□] □
[lemma=simultaneously] [□ & □] □
This viewpoint simultaneously clarifies the combinatorial core of the problem at hand , and allows one to see that many properties of the groups mentioned above are in fact shared by the automorphism groups of a very wide class of sigma-complete Boolean algebras . Thus , a metaphor does not only refer to a thing , but simultaneously describes the respective thing in a certain respect . Tracking using both sensor types simultaneously is an open research challenge . On the other hand , packaging simultaneously represents a major source of secondary raw materials that should be recycled . I think we need to come to an understanding that we should construct a culture that will utilise technology to help give birth to a new form of society which , while it creates wealth , it simultaneously tackles the urgent question of poverty , and , in the process , also helps us to eliminate preventable diseases such as malaria , HIV / Aids , TB and many others , amongst the poor .