您要查找的是不是：
- The first time derivative (which corresponds to the slope of the graph) of this equation, 这个方程的一阶导数(对应着图表的斜率)
- It is the first time that I speak in public. 这是我第一次在公共场合发言。
- It was the first time they had ever met. 那是他们初次会面。
- For the first time they hold hands in public. 他们第一次手搀手地公开露面。
- It was the first time that I spoke in public. 这是我第一次在公共场合发言。
- The first time I saw seals was in an aquarium. 我第一次看见海豹是在水族馆里。
- For the first time in her life her talents had a fair field. 她有生以来第一次获得了充分发挥她才能的均等机会。
- The second time derivative is the constant acceleration. 它的二阶导数就是这个恒加速度。
- The children were so excited to be taken aboard for the first time. 那些小孩第一次被带上飞机，简直兴奋极了。
- Not for the first time my will came up against my wife's. 我同妻子的意愿相违背，这已不是第一次了。
- The camera just come apart the first time he used it. 这相机在他第一次使用时就破了。
- first time derivative 一次微商:心室最大压力随时间变化率
- Foreign travel opened his eyes to poverty for the first time. 他一到外国才初次见识到什麽是贫穷。
- It was the first time he had seen himself/his work in print. 这是他第一次看见自己的作品出版。
- That boy can spell out the Chinese for the first time. 那个小男孩第一次会将汉字慢慢地读出来。
- It was the first time I'd won since I'd learnt to play chess. 自从我学会下国际象棋以来，这是我第一次赢。
- This was the first time that he had met with the abbot. 这是他第一次与男修道院院长见面。
- For the first time he had to pay heed to his appearance. 这是他第一次非得注意自己的外表不可了。
- For the first time he had to give heed to his appearance. 这是他第一次非得注意自己的外表不可了。
- For the first time in months he was in the black at the bank. 几个月来他的银行户头上第一次有了盈余。
