a face marked with smallpox的用法和样例：
- His face is pitted with smallpox.
- He came back with a face as long as a fiddle.
- A playing card marked with nine pips.
- The toddler's mother, already in her thirties, was wearing an old black chiffon Chinese dress;a face marked by toil and weariness, her slanting downward eyebrows made her look even more miserable.