原级：birthday
1. At the closing ceremony of the summer camp, 18 participants who celebrated birthdays over the four days were surprised with flowers and cake.
2. birthdays
2. Kelp soup is consumed by new mothers to replenish their calcium after delivery and to commemorate birthdays.
3. They are special people, for their birthdays only come round once every four years.
4. The " mother " of the contraceptive pill is exercised about birthdays.
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5. Post offices and courier companies are offering fresh flower delivery services for birthdays and other special occasions.
6. Palace officials also decided to forego the customary press conference usually given by the royals to mark their birthdays.
7. Barnett found there were 33 percent more professional AFL players than expected with birthdays in January and 25 percent fewer in December.
8. Some villagers invite the artists to their homes to celebrate harvests or entertain guests at weddings and birthdays.
9. But they are still very cautious when discussing traditional family structure or birthdays.
10. Some rich families would allow anyone who passed by to enjoy a free meal, or would give out money on some traditional festivals or on birthdays.