A non-productive cough does not expel sputum from the respiratory tract.

干咳指不从呼吸道排出痰液的咳嗽。

youdao

When we exhale we expel air from our lungs.

当我们呼气的时候，肺将空气排出体外。

youdao

To accomplish this, Baker and van Deursen designed a fast-aging mouse strain that would, upon receiving a drug trigger, expel p16-producing cells from fatty tissues, muscles and eyes.

为了论证这点，Baker和van Deursen繁殖了一组具有快速衰老基因的实验鼠，在这个过程中，对实验鼠施以药物刺激，从而清除脂肪组织、肌肉和眼睛中含有P16的细胞。

youdao

They also can become weak, expel material from the stomach, and suffer pain in the head or muscles.

VOA: special.2010.04.20

That means that he has to expel from his system not just Homer, not just Virgil and Dante, but also his better teacher, Edmund Spenser.

这意味着他不得不从那个体系中脱离出来，不仅是荷马，维吉尔和但丁，还有他的良师埃蒙德·斯潘塞。

耶鲁公开课 - 弥尔顿课程节选

Most devices used for home heating have a way to expel the gas from the home.

VOA: special.2010.02.02

He thus notes that the government has a rational basis to expel from its food stamp program any employer whose workers swapped food stamps for cash behind his back even though the employer was innocent of any wrongdoing.

FORBES: The Libertarian Challenge To ObamaCare

In Pakistan, foreign students are urging President Pervaiz Musharraf not to expel them from the country.

NPR: Pakistan to Expel Foreign Students at Religious Schools

Half male beauty, half buffoon, he grinned and widened his eyes as if he were trying to expel them from his head.

NEWYORKER: The Artists