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- Navigation is difficult on this river because of the hidden rocks. 因為河上有暗礁，所以在這條河上航行很困難。
- Do exercise every day and you'll be back in condition. 每天鍛煉鍛煉，你很快會恢復健康的。
- He tried to exercise an undue influence upon his colleagues. 他想對他的同事施加不適當的影響。
- Fresh air and exercise are good for the health. 新鮮空氣和運動有益於健康。
- I felt giddy from the unaccustomed exercise. 因不習慣這種運動，我感到暈眩。
- Exercise is profitable in all ages. 運動對於各年齡段都很有利。
- You ought to diet and take more exercise. 你應該節食並多做運動。
- The compass is an instrument of navigation. 羅盤是航行儀器。
- He's taking lots of exercise to get into shape. 他正積極鍛煉使身體健康。
- Exercise will do good to your health. 鍛煉將對你的健康有益。
- Swimming is a good form of exercise. 游泳是一種很好的運動。
- Do not write your exercise in red ink. 不要用紅墨水寫你的練習。
- Don't write your exercise in red ink. 不要用紅墨水寫練習。
- We often do this kind of exercise. 我們經常做這類練習。
- The theory and practice of aircraft navigation. 航空學飛機航行的理論與實踐
- They carried on the exercise after a short break. 在短暫的休息之後他們繼續鍛煉。
- Take as much exercise as you can. 儘可能多做運動。
- I always do some exercise on the balcony. 我經常在陽台上做些鍛煉。
- Exercise will firm up your muscles. 鍛煉身體能使肌肉結實。
- Navigation is difficult on this river because of the hide rock. 因為有暗礁，在這條河上航行很困難。
