De ergernis was te merken aan zijn toon.
Literal Breakdown
Summary
The Dutch translation for “The annoyance was noticeable in his tone.” is De ergernis was te merken aan zijn toon.. The Dutch, De ergernis was te merken aan zijn toon., can be broken down into 7 parts:"the" (de), "annoyance" (ergernis), "was" (was), "to notice (long form)" (te merken), "at" (aan), "his" (zijn) and "show" (toon).Practice Lesson

Acknowledgements
Dutch source