查单词 · 学外语

2026英语单词在线查_免费看外语词汇翻译-单词机

2026英语单词在线查_免费看外语词汇翻译-单词机discretionarydiscretionary考试真题

discretionary

英 [dɪ'skreʃ(ə)n(ə)rɪ] 美[dɪ'skrɛʃə'nɛri]

英语单词discretionary

英英释义考试真题实用场景例句

adj. 任意的；自由决定的

考试真题

In the 1960s, the United States devoted nearly 17% of discretionary spending to research and development, reaping decades of economic growth.