open-faced
/ˈəʊpənˈfeɪst/adjective
1
- having a frank or ingenuous expression（表情）坦诚的。
2
- (of a watch) having no cover other than the glass（手表除玻璃外）无盖的。
2.1
- （亦作open-face）chiefly N. Amer. (of a sandwich or pie) without an upper layer of bread or pastry〈主北美〉（三明治或馅饼）无上片的, 无表层的, 露馅的。