第三人称单数： expectorates
过去式： expectorated
过去分词： expectorated
现在分词： expectorating

Enabled him to expectorate in a new and admirable way .

能够使他用一种新的方法吐唾沫。

Do not expectorate on the sidewalks .

不要在人行道上吐痰。

He began to expectorate small amounts of blood-streaked sputum .

他开始有少量带血丝的痰。

N : you should sit up.that will help your deep breathing , and help you to expectorate and prevent the sputum from accumulating in your lungs to cause pneumonia .

护士：您应该坐起来，那样可以帮助您深呼吸，使痰较容易咳出，以防痰积在肺内引起肺炎。

The cardinal symptoms for the stubborn cough , the expectorate , the phlegm may turn the purulent gradually or mix have the blood .

主要症状为顽固的咳嗽,咳痰,痰可逐步变成脓性或混有血液.