詞根詞源 - challenge

challenge的詞根詞源為chal

例句

1、

Schools must meet the challenge of new technology.

學校必須迎接新技術的挑戰。

2、

The company faces major challenges over the course of the next few years.

這家公司今後幾年將面臨重大的挑戰。

3、

It was a direct challenge to the president's authority.

這是對主席權威的直接質疑。