My heart had started to thud, and my mouth was dry.我的心开始咚咚跳，嘴里发干。I heard the regular thud thud thud of running shoes behind me.我听到身后跑鞋有节奏地噔噔噔地响着。She tripped and fell with a sickening thud.她绊了一下，重重地摔倒在地。...
学生们分组研究复杂的问题。The students work in groups on complex problems.参加者按年龄分组。Participants were categorized according to age.你的工作是把他们按字母顺序分组，然后按数字顺序排序。Your job is to group them by letter and put them in numerical order....
The officer dismounted, tethering his horse to a tree.军官下了马，把它拴到一棵树上。We're often told that the world is tethering on the brink of destruction.我们经常被告知世界处于毁灭的边缘....