仔细观察

He examined the man with a penetrating gaze.

他以锐利目光察了那个人。

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

他母亲察他面容想查明他是否说真话。

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

她不动声色,察正填写那个比利时人。

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

虽发生率高，但只要察、有效护理，是可以降低口腔粘膜炎发生程度。