阻止

prevent; stop; hinder; prohibit; discourage; arrest; block; obstruct; impede; preclude; deter; halt; check; curb; inhibit; restrain; thwart; stymie; forestall; forfend; hold back; nip in the bud; prevention; discouragement; obstructive; resistant; anti-; against

沙漠

desert; sand; waste; areg

扩展

expand; extend; enlarge; develop; spread; widen; expansion; extension; enlargement; development; expansive