Obstacles
n. 障礙（物）( obstacle的復數形式 ); 障礙物; 絆腳石; 障礙柵欄
??? 情景例句
Mary, I'm glad you called me.
Mary，很高興你給我打電話。
Be slow in choosing a friend; slower in changing.
選擇朋友要審慎，摒棄更要審又慎。
This brief experiment would dispel any further doubts you might have.
這一簡單的試驗會消除你可能存有的一切疑慮。