usefulness 核心詞議：
n. 有用；有效性；有益
usefulness 基本解釋
速記方法知識擴展
中文詞源
中文詞源：
usefulness
精選例句
1、 There are doubts about the usefulness of these tests.
這些試驗是否有用，人們有所保留。
常見考點例句：
- So both their use and their usefulness were extremely limited .
- 因此這些檢測的使用和有用性都極其有限。
- The selection of locations also features tongue-in-cheek descriptions so users can assess the usefulness of each category .
- 對區(qū)域選擇的說明看上去還挺像回事兒，用戶可以由此進入有用的目錄。
- Usefulness aside , this extension will let you see the date that any user joined the micro-blogging service .
- 撇開是否有用不談，這個擴展能讓你知道這個微博服務(wù)中任何用戶的創(chuàng)建日期。
- Usefulness , he said , is a large part of what makes the paper he most admires beautiful .
- 他說，紙之所以如他贊賞的那樣美麗，很大一部分原因是因為紙有用。
- How can this problem be solved by retaining the seemingly usefulness of global variables while keeping to object-oriented programming 's strict standards ?
- 如何這樣解決這個問題：保留這看起來有用的全局變量同時符合面向?qū)ο蟮某绦蛟O(shè)計的嚴格標準？