valid instrument的用法和樣例：
例句
- The development of the questionnaire offers one valid tool for our stress and coping research in the future.
此量表的建立為我們今后進(jìn)行壓力與應對的研究提供了一個(gè)有效工具。 - In earlier CDA works, transitivity in SFG was believed to be an efficient instrument for investigating ideologies hidden in news reporting.
系統功能語(yǔ)法中的及物性在早期的批評性話(huà)語(yǔ)分析著(zhù)作中被視為揭示新聞中隱藏的意識形態(tài)的有效工具。
