▍原文 Some Europeans are becoming leery of visiting the U.S., as reports of U.S. immigration authorities detaining them while traveling, for reasons that are not clear, swirl. Several western travellers have recently been rejected at U.S. border on increasingly flimsy grounds under Donald Trump's immigration crackdown, some of them shackled and held in detention centers in poor conditions for weeks. "The only reason is there is a much more fervent anti-immigrant atmosphere," an expert said. ▍語言點 1. leery /ˈlɪəri/ adj. 謹慎的，不信任的 2. detain /dɪˈteɪn/ v. 拘留，扣押 3. swirl /swɜːl/ v. （本文）未經證實的信息迅速傳播、持續發酵； 打旋，旋轉 · rumours swirl 謠言滿天 · controversies swirl 爭議四起 4. on … grounds 基於……理由 · ground （本文）n. 理由，依據，原因 5. flimsy /ˈflɪmzi/ adj. （本文指證據或理由）站不住腳的，不足信的；易損的，不牢固 6. shackle /ˈʃækl/ （本文）v. 給……戴手銬；n. 鐐銬，手銬 7. fervent /ˈfɜːvənt/ adj. 熱烈的，熱...