well-kept

adj.

保管妥当的，被忠实遵守的；

1. You were well out of order taking it without asking.
   你不问一声就把它拿走，这是很不妥当的。
2. She pledged her word, and kept it, for my sake.
   她誓守诺言，为了我的缘故而保守秘密。
3. But not all the secrets can be kept.
   但却不能保守所有的。

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Activity theory: A well-kept secret
Intraoperative Crossover: The Well-Kept Surgical Secret to Apparent Surgical Success
Minocycline and Pseudotumor cerebri: The well-known but well-kept secret
A well-kept secret?
The essence of chocolate: a rich, dark, and well-kept secret.
Some well-kept hypothalamic secrets disclosed
Municipal Reform in Mayor-Council Cities: A Well-Kept Secret
Wife Battering: A Well-kept Secret
Minocycline and The Well-Known but Well-Kept Secret