英和和英

A laugh slipped out.

He laughed loudly―burst into loud laughter.

cannot repress laughter

gave an uneasy laugh

I laughed in spite of myself.

I couldn't help laughing.

was laughing；were laughing

He smiles foolishly―smiles like an imbecile.

I rolled about in convulsions of laughter

I laughed in spite of myself.

I burst out laughing in spite of myself.

I laughed

I laughed.

She nodded assent with a smile.

I laughed a lot

Laughed a lot

in fits of laughter

Everybody laughed.

go into fits of laughter

I burst out laughing in spite of myself.

the act of smiling

I smiled from my heart.

Why should I not laugh?

I felt so tickled that I laughed.

Stop laughing.

smiled thinly

was laughed at；were laughed at

emotional activity caused by object (derision; laugh at, ridicule, sneer, mock etc.)

to laugh to oneself

They burst into laughter―burst into a roar of laughter.