Given the task definition and input, reply with output. In this task, you are given a sentence or phrase in English. You must translate it to Xhosa in a way that is equivalent in terms of meaning and grammatically correct.

Until a few years ago it was not easy to predict what type of propulsion machinery would dominate in the future.
Kangangeminyaka embalwa eyadlulayo kwakungelula ukuqikelela ukuba yeyiphi intlobo yomatshini oqhutyelwa phambili oyakongamela kubomi obuzayo.