您要查找的是不是：
- 黄sulfur
- 背板backboard
- 啸to hiss
- 黄页yellow page
- 背的neural
- 黄钻Elopichthys bambusa
- 把这些单词背熟。Learn these words off by heart.
- 飞黄腾达make a rapid advance in one's career
- 背靠back on
- 大黄rhubarb
- 我们听到救火车汽笛的尖啸声。We heard the wailing of fire-engine sirens.
- 背痛backache
- 黄酮flavone
- 黄种人yellow race
- 我们听到一颗子弹的尖啸声。We heard the zip of a bullet.
- 背胶application of gum
- 黄的yl.
- 背投back projection
- 啸叫squeaking
- 背斜anticline
