給爸媽填160表遇到問題：曾經被拒簽麽？ＥＸＰＬＡＩＮ．

Have you ever been refused a U.S. Visa, been refused admission to the United States, or withdrawn your application for admission at the port of entry?　ＥＸＰＬＡＩＮ．

我需要把他們每次被拒簽的時間和地點寫上麽。怎樣寫這個原因呢？

（很不幸，他們曾被拒過３次，第四次通過了）原因可能是什麽ＴＩＥ之類的，不詳。

謝謝！