there is no generic way to create adapters around call targets (a corollary of the previous point)

并没有一般的方式以围绕着调用目标创建适配器（这是上述限制的必然结果）

youdao

Failure of the South East Coast Ambulance Service (Secamb) to meet emergency call-out targets is being blamed on staff shortages.

BBC: Ambulance

He did not call for exchange rate targets but there will be international concern that, as countries jostle for export markets, a battle over currencies will follow.

BBC: France takes aim at Britain

East Midlands Ambulance Service (EMAS) has again failed to hit government targets for emergency call responses, the latest monthly figures revealed.

BBC: Ambulance at A&E