v.使或变的紧张(tense的过去式与过去分词形式);
例句:
She tensed at the approaching footsteps.
她听到越来越近的脚步声马上紧张了起来.
All his muscles were tensed.
他的肌肉全都绷紧了.
The rabbit tensed up and pricked up its ears.
兔子紧张起来,竖起耳朵.