No two threads will be able to execute methods against those objects at the same time (on a per-object basis, obviously).

不会存在两个线程同时调用该对象的方法的情况（显然是以对象为基础的）。

youdao

To minimize the work required on a per-object basis, the default should minimize the objects for which you must specify the object lifetime.

为使针对平均每个对象所需执行的工作最小化，默认设置应使需要指定生存期的对象个数最少。

youdao

At first, from the point of levying a tax on the surplus of land, the paper exactly analyses the subject, object, basis and target of collecting land rent and tax.

本文从对土地的剩余征税说起，准确地分析了地租和土地税的征收主体、征收对象、征收依据、征收目的。

youdao

Some people object to an opt-out system on the basis that there will inevitably be a few people who fail to opt out and fail to inform their family of their wishes, even though they would not wish their organs to be used to help others - and these people may have their organs taken without consent.

BBC: Viewpoint: Should organ donors get free funerals?