Dear all, <br/><br/>I am not sure the meaning of the flowwing words in bold. Could you explain them for me? Thank you very much. <br/><br/>1. protein: the building<b> block</b> of muscles <br/><br/>2. Do you want another <b>serving</b> of vegetables? Like another dish of vehetable <br/><br/>3. This chocolate cake is reaaly <b>rich</b>; don't eat too much or you will gain weight.<br/><br/> too mmany fats<br/><br/>Thanks again.