People using it have to lean close to each other so they can talk and listen to each other.

人们在球里交谈的时候需要互相靠近，这样他们才能交谈并倾听对方。

youdao

Maintain eye contact, lean in and pause when your faces are close but not touching, to allow the other person space to escape or, hopefully, lean in too.

保持眼神交流，靠近，当你们的脸接近但没接触时停下，给另一方停下或更希望的是，靠近一点的机会。

youdao

To get the most out of each stride, swing your arms close to your body, don't lean forward, and keep your feet low to the ground.

为了最有效的发挥跑步的作用，摆臂时手臂尽量靠近身体，身体不要前倾，抬脚不要过高。

youdao

Dr Stroud said the chances of an overweight but active individual having a serious heart attack or stroke are raised by only 20% compared to a lean active individual, whereas an inactive lean individual is close to being at 300% greater risk.

BBC: NEWS | Health | Magician helps nutrition therapy

He smiles broadly, while his daughters Rosa and Maria lean in close to him.

NPR: Photos Of Hugo Chavez Shown After 2-Month Absence

Chrysler has come as close to producing cars to the legendary Toyota lean standard as any other company.

ECONOMIST: A new kind of car company