1-not to be a simpering semanticist 别怪我说话直

Not to be a simpering semanticist, but if manager is content to pay your colleague to convert surplus oxygen to CO2, then she can hardly be accused of stealing her own wages.

2-cadge 乞讨，索取

3-subpar 低于标准的

4-onlooker 旁观者

5-deem 认为，相信

There's a distinct difference between cadging from the cash drawer and putting in what an onlooker deems to be a subpar level of effort.

6-systematically 有条理有步骤地

And if you suspect this unequal distribution of of duty systematically burdens workers of specific gender, race, age, group, etc., that's a matter for HR or even a lawyer.

7-paddle 用浆划

Maybe she's paddling harder than is visible on the surface.

8-redundant 被解雇的，多余的

Maybe management is building the case to declare her redundant.