“下弯的”常见的英文表达是 downward-curving 或 down-curving，也可根据具体语境使用 bent downward、sagging（侧重于因重力而下垂弯曲）、drooping（有向下耷拉、弯曲之意） 等表述。例如：
The branch has a downward-curving shape.（这根树枝呈下弯的形状。）
The old bridge has some down-curving beams.（这座老桥有一些下弯的横梁 。）
The leaves were bent downward by the heavy rain.（大雨把叶子压得下弯了。）
Her shoulders had a sagging, down-bent appearance.（她的肩膀呈现出一种下垂、下弯的状态 。）
The plant had drooping, downward-curving stems.（这株植物的茎是下弯耷拉的。）