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Ngwa ihe na-agbaji isi n'ihu akụkụ akara
Anyị niile maara na Na elu okpomọkụ na-arụ ọrụ na gburugburu ebe obibi, arụmọrụ nke excavator na-ebelata na ihe ndị nkịtị.Ntugharị nke mkpanaka piston na-eme ka egbugbere ọnụ na-agbawa na nrụrụ, na-ebute nkwụsị.
