They placed very stable and accurate atomic clocks on regularly scheduled jet airliners.他们将非常稳定、准确的原子钟装在定期飞行的喷气式班机上.The flier flew a new - type jet plane.飞行员驾驶一架新式喷气机.It is becoming accepted practice that jet aircraft mu...
Certain passages were excised from the book.书中某些段落已删去。Similarly, any pigment nevus that is chronically irritated should be excised.同样, 凡是经常受慢性刺激的各种色素痣切勿予以切除.Their very names needed to be excised from the history books.他们...