expectorate

vt. 咳出
vi. 吐痰

名词:expectoration 动词过去式:expectorated 过去分词:expectorated 现在分词:expectorating 第三人称单数:expectorates 

ex.pec.to.rate

v.（动词）
ex.pec.to.rat.ed,ex.pec.to.rat.ing,ex.pec.to.rates
v.tr.（及物动词）
To eject from the mouth; spit.
吐：从嘴里吐出；吐出
To cough up and eject by spitting.
咳出并吐掉
v.intr.（不及物动词）
To spit.
吐出
To clear out the chest and lungs by coughing up and spitting out matter.
通过咳和吐出的办法清理胸和肺

来源：
Latin expector3re expector3t- [to drive from the chest]
拉丁语 expector3re expector3t- [从胸中清出]
ex- [ex-]
ex- [前缀，表.出自….]
pectus pector- [chest]
pectus pector- [胸]

【引伸】
expec.tora.tion
n.（名词）