tumor marker的用法和樣例：
例句
- Tritide can be used as a tracer and is an ideal marker of knowing the reservoir and the state of the fluid movement.
氚化物作為示蹤劑是一種較理想的認識油層及其流體運動狀態的標記物。 - Is Pre-operative Anaemia a Risk Marker for In-hospital Mortality and Morbidity After Valve Replacement?
手術前貧血是瓣膜置換手術後院內死亡率和發病率的危險標記物嗎？
