Pacemaker of heart
[医] 窦房结
🏥 医学释义
心脏起搏器
🧩 词语组成解析
pacemaker
[['peisˌmeikə]]
n. 带步人, 标兵, 起搏器\\n[医] 起搏点, 起搏器
of
[əv]
prep. 关于;属于…的;由…制成;
aux. 助动词 [非标准用语、方言] =have [主用于虚拟语气];
heart
[hɑrt]
n. 心，心脏;感情;要点;胸部;
vt. 鼓励;激励;
vi. 结心;
🗣️ 情景例句
and they lived in New York.
而他们住在纽约。
Do not sell the bear's skin before you have caught the bear.
熊未到手休卖皮（勿过早乐观）。
Who was first? Who was second? Who was third?
谁是第一？谁是第二？谁是第三？