您要查找的是不是：
- 黑背鸥saddle back
- 黑black
- 黑背鸟blackback
- 黑背信天翁Laysan albatross
- 翅wing
- 雀lentigo
- 黑背斑潜蝇L. trifoliearum
- 黑莓blackberry
- 背板backboard
- 翅片fin
- 黑的sable
- 背的neural
- 红翅旋壁雀wall creeper
- 黑眼圈dark pouches
- 把这些单词背熟。Learn these words off by heart.
- 黑灯瞎火dark
- 翠翅金雀玉搔头Like her jade hair-pin with the gold sparrow and green feathers
- 背上有一块白斑的黑狗a black dog with a white patch on its back
- 晒黑brown
- 背靠back on
