For some reason that is perhaps related to his allergies, Mr. Alexander has trouble detecting the subtleties of fragrances at close range.

Do I have trouble detecting sound, discriminating words, or both?

Tonight's viewer will look in vain for answers, and may have trouble detecting the questions.

Twining shook his head, and M'Benga had no trouble detecting the sadness within him.

Even an Awacs plane would have trouble detecting her.

Dr. Don said the technique had trouble detecting round objects, which tend to disperse the sound hitting them.

No wonder we had such trouble detecting them, he thought.

We were not prepared for this submarine life and we might have had some trouble detecting the approach of the Terrans.

Our sensors have trouble detecting the rift, and we have better equipment and know what to look for.

Vorrel might have thought he was keeping his emotions in check, but Kirk had no trouble detecting the condescension in his voice.