She tripped along joyfully as if treading on air .

脚底下轻飘飘的。

That cough sounds as if it is getting worse .

患的咳嗽像是更重了。

She stared at the card as if she could contact its writer by clairvoyance.

她凝视着卡片，好像能用千里眼看见书写它的人。