"ascertain"的意思是确定，查明，弄清。
以下是一篇关于"ascertain"的英文范文：
I had to ascertain the exact location of the missing item in order to locate it. I spent hours searching through the house and even checked the garage and the car, but still couldn't find it. Finally, I asked my wife to help me and we spent another hour searching together. Afterwards, we ascertained that it had indeed been left somewhere else. This experience taught me that it's always important to ascertain the facts before making assumptions.
ascertain是一个英语单词，可以用作动词，意思是“确定；查明；弄清；确定…的确实性质”。
在英文范文中有许多应用实例，例如：
"The doctor ascertained that the patient had a severe case of food poisoning and advised immediate hospitalization."（医生确定病人患有严重的食物中毒，建议立即住院治疗。）
"The police ascertained the identity of the suspect through fingerprint analysis."（警方通过指纹分析确定了嫌疑人的身份。）
"I'll try to ascertain whether or not she's still interested in pursuing the relationship."（我会试着查明她是否还对继续这段关系感兴趣。）
以上内容仅供参考，如需了解更多的英文范文信息，建议咨询专业人士。
ascertain的意思是“确定；查明；证实”。
在英文范文中的应用示例：
ascertain the cause of the accident (查明事故的原因)
ascertain the location of the missing person (查明失踪者的下落)
关于这个词汇的最新变化，目前没有特定的信息。