1. CONCLUSION: We conclude that bag-mask ventilation is easier in edentulate patients when their dentures are left in situ during induction of general anesthesia. 结论：无牙患者全身麻醉诱导过程中保留假牙在原位有助于面罩通气。
2. Mask shopping bag designed by Karl Lagerfeld. Karl Lagerfeld设计的面具购物袋。
3. The mask might almost be a feed bag, except for the window panes and the enclosed ear muffs. (AP Photo) 实际上，所谓的防毒面具可能就是一个饲料袋，只不过眼部装了窗玻璃同时还配备了封闭的耳套。
4. He dropped his fins, mask and snorkel into his dive bag and checked his watch, noting the dive time and depth. 他把脚蹼、面罩、输气管都丢到潜水包里之后，查看自己的手表，记录下潜水时长和深度。
5. Choose deeper colors to mask stains and weatherproof the bag according to the designer's directions, she cautions. 她提醒说，要选择深一点的颜色，这样更耐脏，同时要根据设计师的指导对手袋进行保养。
