1. 变得无情的, 变硬的：horizontal sync marker 水平同步标志 | calloused 变得无情的, 变硬的 | load capacitor 负载电容器

2. 变得无情的：callous 麻木的 | calloused 变得无情的 | callout 插图编号

3. 起了老茧的：Alliance : 盟友 | Calloused : 起了老茧的 | Patriotism : 爱国精神

adj

1. having calluses
having skin made tough and thick through wear

e.g. calloused skin
with a workman's callous hands

Synonym: callousthickened