cower|cowered|cowering|cowers

小男孩躲在门后，害怕地蜷缩着。

The little boy ___cowered behind the door in fear.

那只小狗在雷声轰鸣时蜷缩在角落里发抖。

The puppy was ___cowering in the corner during the thunderstorm.

小狗听到雷声时吓得缩在角落。

The puppy ___cowers in the corner when it hears thunder.