His mother scanned his face to see if he was telling the truth.

他的母亲他的面容想查明他是否说真话。

The involved mucose was mainly on the cheek, tongue, lip and gingiva.

虽发生率高，但只要、有效护理，是可以降低口腔粘膜发生程度的。

He examined the man with a penetrating gaze.

他以锐利的目光了那个人。

Her face remained impassive,studying the Belgian as he completed the form.

她不动声色,正在填写表格的那个比利时人。