scab

结痂、疮疤、伤口的硬皮

Try not to pick the scab, or the cut will leave a mark.

尽量不要去抓结痂，不然伤口会留下痕迹。

工贼、罢工破坏者贬义

The strikers shouted at the scabs crossing the picket line.

罢工者对著穿越警戒线的工贼大声叫骂。

结痂、长出硬皮

The wound scabbed over within a couple of days.

伤口在两三天内就结痂了。

当工贼、破坏罢工贬义

Several drivers scabbed during the two-week strike.

在那两周的罢工期间，有几名司机当了工贼。