Dr. graham suddenly and without knocking burst into the room .

格雷汉姆医生也没顾上敲门，就突然冲进了屋。

And one fall day , a familiar visitor came knocking on our door .

秋天的某日一位熟悉的访客来敲我们的门。

The latest mission has dominated front pages of china 's state-controlled media , knocking aside coverage of china 's continuing scandal involving contaminated milk .

这次飞行行动占据了中国国家媒体的头版，把持续中的有关污染牛奶的丑闻甩在了一边。

Earth starts making a strange knocking sound , then breaks down entirely .

地球开始发出奇怪的敲击声，然后整个崩裂了。

The united states took the lead in knocking out libyan air defenses .

在摧毁打击利比亚空中防御系统方面，美国是占据领先优势的。