1. 他們能夠用雷達(dá)測(cè)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?cè)?em>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：