bearing premature的用法和样例：
例句
- These patients generally have many atrial premature beats noted on Holter monitoring.
通过动态心电图观察到这些患者普遍存在较多的心房早搏。 - Long-term isoproterenol infusion also induced premature entricular contractions and atrioentricular heart block in junctin-null mice.
长期异丙肾上腺素输入也可在连接素缺陷小鼠诱发室性期前收缩和房室传导阻滞。
