Obbligatos
(obbligato 的復數) n. 伴奏\\na. 不可缺少的
??? 情景例句
Can we test a new game for you, Susan?
我們可以幫你試驗你的新游戲嗎 ，Susan？
So he keeps on studying after his English classes in order to prepare for life in America.
所以他在英語課下課后還繼續學習，為以后在美國生活做準備。
Everybody on board was worried and we were curious to find out what had happened.
飛機上的人都很著急，大家都急于想知道究竟出了什么事。