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- be of unvarying validity 一直有效
- principles of unvarying validity; 恒久合法性原则；
- The experience gained will be of great value to us. 所取得的经验对我们有很大价值。
- maintained a constant temperature; a constant beat; principles of unvarying validity; a steady breeze. 保持不变的温度；连续不断的打击；恒久合法性原则；稳定的微风。
- My advice may be of use for you. 我的意见也许对你有用。
- 63. maintained a constant temperature; a constant beat; principles of unvarying validity ; a steady breeze. 保持不变的温度；连续不断的打击；恒久合法性原则；稳定的微风。
- Fancied himself to be of a macho cast. 想象他自己是一个强壮男子
- Can I be of service to you in organizing the trip? 你组织这次旅行需要我帮忙吗？
- This book will be of great value to him in his study. 这本书将对他的研究有很大价值。
- I've just struck on something which might be of use to us. 我刚才想到一个办法可能会对我们有用。
- The new regulations will be of great benefit to us all. 新规章对我们大家都会大有好处。
- The new discovery is bound to be of great service to mankind. 这项新发现对于人类必定大有用处。
- The belief that all religions are of equal validity. 冷淡主义认为所有宗教具有相同的正确性。
- Can I be of any assistance, sir? 我能帮点儿忙吗，先生?
- If I can be of service, do not hesitate to call on me. 有用得着我的地方，尽管来找我。
- I am only too glad to have been of help to you. 对你能有所帮助十分高兴。
- Perhaps this book will prove to be of some use to you in your studies. 也许这本书会对你的研究有用处。
- Riots are of frequent occurrence in this province. 这省经常发生骚乱。
- This was his fatal defect; he was of feeble will. 这是他致命的弱点，他意志薄弱。
- I was glad to be of some assistance. 我很高兴为您效劳。
