Task: Translation
Input (Xhosa): Isivalo esenzelwe ukuvumela ukuba ulwelo luhambe kwicala elinye, kwaye singamvumeli naluphi na ulwelo ukubalubuyele okanye lungene kwelinye icala laso .
Output (English): a valve which is designed to allow fluid to pass through the valve in one direction, but not allow any fluid to either return and flow through the valve in the other direction