1.speed of sound 音速

例句：The new airplane flies at twice the speed of sound.

这架新式飞机以两倍于音速的速度飞行Q@&s^&SJxTT_mg8G。

2.in addition to 除…之外

例句：In addition to accumulating and preserving these oncogenic scars, a stem cell's enormous proliferative capacity makes it an ideal target for malignancy

干细胞除了可累积并保存这些致癌突变外，还具有强大的增殖能力，使它成为癌化的理想目标DIL^NPkAW[s。

3.free fall 自由下落

例句：His quest began in September 1988, when the French space agency selected him to free fall and parachute from near-space.

他对极限跳伞的追求开始于1988年9月@Tu[b*c+bCc#u%s&B。那时的法国空军机构选中他去做近天的自由降落和跳伞运动%m+,;Ct^If2dwnxN。

4.high-tech 高科技的

例句：The dream of a high-tech Florida is not outlandish.

建立一个高科技佛罗里达并非离经之谈z_L[+@oUn-。