adj.不倦的，持续的，不松懈的

unflagging不减弱的
un-, 不，非，flagging, 松懈。

Unflagging Courtesy → 不倦礼貌
with unflagging patience → 不厌其烦
unflagging g → 不屈不挠既
unflagging a → 不衰的
unflagging efforts → 锲而不舍
unfading unflagging → 不衰的
unflagging enthusiasm → 不减退的热诚

1. He was sustained by the unflagging support of his family.
[汉]他得到了家人不断的支持。
——来自柯林斯例句
2. The book is not one word too long and its narrative pace is unflagging.
[汉]这本书文字简洁，叙事流畅。
——来自柯林斯例句
3. We owed the Shah a great deal for his unflagging loyalty during the October War.
[汉]我们应当大大感谢伊朗国王在十月战争期间表现的始终不渝的忠诚.
——来自辞典例句
4. The co - operation of these governments requires unflagging effort.
[汉]政府间的这些合作需要坚持不懈的努力.
——来自互联网
5. But market pressures are real and unflagging.
[汉]不过市场的压力却是真真切切,无可躲避.
——来自互联网

【Adjective】

1. showing sustained enthusiastic action with unflagging vitality;
"an indefatigable advocate of equal rights"
"a tireless worker"
"unflagging pursuit of excellence"
2. unceasing;
"unfailing loyalty"
"unfailing good spirits"
"unflagging courtesy"