现有的疫苗的英文：
currently available vaccines, existing vaccines

erratic current
涡流|不稳定的电流

Stop the current transfer Stop the current transfer (ESC)
停止当前传送停止当前传送(ESC)

A device used to convert direct current into alternating current.
反用换流器用于变直流电为交流电的仪器

be found or available.
被发现或者可利用的。

Very little data is available.
现有的资料十分不足。

They should have plug details available.
他们要补充自己所知道的细节。

Vaccines are prophylactic.
疫苗有预防的效果 。

I'm to have a vaccination tomorrow.
我明天去种痘。

There have been problems with the formulation of the vaccine.
疫苗的配方有些问题。