基本心脏生命支持系统的英文：
BCLS, Basic Cardiac Life Support System

The basic form of this crystal is a rhomb.
此类晶体的基本形状为一菱面体。

This is a basic quartz analog clock.
这是一个普通指针式石英钟。

There is distinction of the basic essentials and the periphery
事有本末

cardiac accelerator nerve
心加速神经

Epinephrine is a powerful cardiac stimulant.
肾上腺素是一种强效心脏兴奋药。

At some moment, the cardiac will be useful.
某些时候，强心剂会很管用。