1. 他們能夠用雷達(dá)測定快艇的方位。
   They were able to position the yacht by means of radar.
2. 敵艦的影像已顯現(xiàn)在雷達(dá)（屏幕）上。
   Enemy ships were detected on the radar (screen).
3. 他們在雷達(dá)屏上看到了那艘游艇。
   They picked up the yacht on their radar screen.
4. 雷達(dá)密切監(jiān)視天空，搜索敵機(jī)。
   The radar scanned the sky for enemy planes.
5. 了望塔通過雷達(dá)追蹤這架飛機(jī)的飛行。
   The watchtower followed the aircraft by radar.

雷的英語翻譯：

達(dá)的英語翻譯：