她茫然的神情让我怀疑她是否在听.The vacancy of her expression made me doubt if she was listening.她脸上有种茫然的神情。She had a kind of vacant look on her face.我在她的眼睛里看到一种茫然的, 忿恨地难以理解的眼光.I recognized the blank , resentful stare of incomprehension...
我将专攻地理学.I shall confine myself to the subject of geography.森林学和地理学有关.Forestry appertains to geography.那时正是地理学真正开始发生改变、许多新观念兴起的时候。It was just when geography was really beginning to change and lots of new ideas were coming...
At that moment the tiger commenced ambling towards his victim.就在这时,老虎开始缓步向它的猎物走去.The gait has a typical roll when ambling or walking.走路时步伐为典型的滚动步伐.He was ambling along the road.他从容轻松地沿路行步....
然而近代电子学对调谐的频率范围很宽的带通放大器提出很多要求.There is a great deal of demand in modern electronics, however, for bandpass amplifiers.频率是可以调谐的.It is accompanied by a tone.外腔反馈的激光二极管阵列 ( LDA ) 可获得窄线宽 、 可调谐的光谱输出.Linewidth - narrowed, tuna...