calf diphtheria的意思|示意

Calve：

Calve 是一个动词，意思是指牛或其他荷兰动物产仔。以下是它的定义：

Calve /kɑːv/ verb

[no object]

(of a cow, reindeer, or other mammal of the family Bovidae) give birth to a calf.

例如：

The cow is due to calve soon.

这头牛很快就要生小牛了。

Diphtheria：

Diphtheria 是一种传染性疾病，常常被称作白喉病，由白喉杆菌（Corynebacterium diphtheriae）引起。白喉病的典型症状是结膜炎、淋巴结肿大和痰涂抹舌头。

Diphtheria /dɪfˈθɪəriə/ noun

an infectious bacterial disease, typically of the throat, with symptoms including difficulty in swallowing and breathing, and a membrane forming in the throat.

例如：

The incidence of diphtheria has been steadily declining since the introduction of vaccination.

自从引入疫苗以来，白喉病的发病率一直在稳步下降。