| 1 | Flight attendants have to deal with problems quickly so that passengers remain calm. | |
| 2 | We need a large, flat outdoor site to accommodate our seating arrangement. | |
| 3 | QR code and customized platform bring more convenient life for different groups in society and also for every kind of potential business value. | |
| 4 | A survey conducted in Britain confirmed that an abnormally high percentage of patients suffering from arthritis of the spine who had been treated with X rays contracted cancer. |
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