这一系统采用了特别好的图形界面。The system uses an impressive graphical interface.新版程序的用户界面比原来程序的好得多.The new version of the program comes with a much better user interface than original.该程序界面明了，适用范围广。This program has perspicuous interfa...
Drivers must be on the alert for traffic signals.驾驶员必须密切注意交通信号.They were constantly on the alert not to be taken by surprise.他们一直处于常备不懈状态以防突然袭击.Hearing this, I was instantly on the alert.我一听这话, 当下就警惕起来....
在联欢晚会上大家都非常愉快.Everybody enjoyed himself ever so at the evening party.在这次圣诞节联欢会上我们玩得很不愉快.We had a ghastly time at the Chritmas party.希德生病,没法和大家联欢, 玛丽留 在家中陪他玩.Sid was sick and had to miss the fun; Mary remained at home to ...