His aptitude caught the attention of the director of the experimental garden Hugo de Vries who became his mentor and encouraged him to take some university courses on botany.是什么意思_His aptitude caught the attention of the director of the experimental garden Hugo de Vries who became his mentor and encouraged him to take some university courses on botany.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句