This is the 2400th most frequent Chinese word.
唾液
Saliva.
In this sentence, '唾液' is used to describe the biological fluid secreted in the mouth that aids in digestion.
唾液可以帮助消化食物。
Saliva can help digest food.
Here, '唾液' refers to the bodily sample obtained for medical analysis.
医生收集病人的唾液样本以检测病毒。
The doctor collects a saliva sample from the patient to test for viruses.
In this example, '唾液' is described in its functional role related to oral health.