1. 舒适性：4.3环保性 ENVIRONMENT | 4.4舒适性COMFORTABLENESS | 5.合作与发展 COOPERATION AND DEVELOPMENT

noun

1. a feeling of being at ease in a relationship

2. a state of being relaxed and feeling no pain

e.g. he is a man who enjoys his comfort
she longed for the comfortableness of her armchair

Synonym: comfort