苦苦思索用英语怎么说？

苦苦思索

例句

• I'm trying to think how to get there. 我在苦苦思索如何赶到那儿。
• Nosenko puzzled out Kutya's surname... 诺先科苦苦思索终于想起了库佳的姓。
• Helene frowned and thought hard. 海伦颦眉苦苦思索.
• Nosenko puzzled out Kutya's surname. 诺先科苦苦思索终于想起了库佳的姓。
• The opportunity had gone. His mind scrabbled for alternatives. 机会已经失去。他苦苦思索别的方案。
• The Institute spends a lot of time scratching its head about how to boost American productivity. 该协会花费大量时间苦苦思索如何提高美国的生产力。
• She only made the decision to apply for training after years of agonizing. 多年的苦苦思索之后，她才作出了申请培训的决定。