However, the molecular mechanism of ameloblast differentiation remains unclear.但是, 有关成釉细胞分化的分子机制仍未明确.An open verdict was the only appropriate one , given the very unclear evidence at the inquest.调查发现的证据十分不清楚,只有作出存疑判决才恰当....
加速度和速度都是矢量。Acceleration and velocity are both vectors.所有太空人都应能承受加速度.All spacemen must be able to bear acceleration.摆式加速度计的设计与陀螺设计有很多共同之处.The pendulous accelerometer design had much in common with the gyro design....
John smiled at them and gave Richard a playful poke.约翰冲着他们笑了笑，开玩笑地捅了理查德一下。This album is bright, breezy and playful.这张专辑音乐轻松明快，趣味十足。Her manner is playful and girlish.她举止像少女般顽皮。...
When you see the zodiacal light , you are looking edgewise view into our own solar system.几乎每年的这个时候我们都能够观测到黄道光(从北半球看).Having crashed on alien planet in a distant solar system, you find yourself in trouble.坠毁,机上有来自遥远星系的外星...
在学校附近泊车会引起严重的交通堵塞.Parking near the school causes severe traffic congestion.约翰对那些在他家附近泊车堵住通道的司机感到恼火。John was irritated by drivers parking near his house and causing an obstruction.他们总是非常幽默地表达对泊车规定的不满。When they groused abo...