| 单词 | preen gland |
| 例句 | But juncos likely aren’t making their perfume alone: Lots of those preen gland chemicals are naturally made by bacteria. Bacteria give bird its sexy smells 2016-06-29T04:00:00Z The embryo's survival may be enhanced by the odorous, oily secretions of the mother's preen gland that grease the eggs' shells during laying and incubation. Ornithology: Oology unshelled : Nature : Nature Publishing Group 2016-04-12T04:00:00Z |
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