Các câu ví dụ cho từ upgrading

1. Nguyen Viet Tien, deputy director of My Dinh Stadium, said the national sport complex had already finished upgrading its track and field facilities for an estimated of VND40 billion (nearly $1.

2. The plan also envisages upgrading transport infrastructure in communes and villages inhabited by ethnic minorities, starting with asphalt or concrete paving of the main roads.

3. 8 billion on upgrading its existing railway system and use it exclusively for cargo transport.