最长的末尾带s的单词？
1abacus
2 abbess
3 aborigines
4 abscess
6 abyss
7 acceptances
8 access
9 accoutrements
10 acephalous
11 acidulous
12 acrimonious
13 acrobatics
14 acropolis
15 across
16 actress
17 actuals
18 acuteness
19 address
20 adulteress
21 adulterous
