未经的英文：
not (yet)

In the natural state;not yet processed or manufactured
自然状态的;未经加工或制造的

Ideas should not repose on unsupported facts.
想法不应该建立在未经证实的事实之上。

audio and video recorders and players
录音机或音响回放装置、录像或放映机、未经录制介体

Staple fibres of polyesters, not carded or combed
聚酯短纤,未梳或未经其他纺前加工

Staple fibres of viscose, not carded or combed
粘胶纤维短纤,未梳或未经其他纺前加工

Staple fibres of polypropylene, not carded or combed
聚丙烯短纤,未梳或未经其他纺前加工

An unplanned adventure;an unplanned picnic.
一个未经计划的冒险;一次随兴而做的野炊

Vehicles parked here without authorisation will be wheel clamped
未经允许,擅自停车者,将予以扣留

The chairman of the directors did not receive Walker yesterday because he was a walk-in.
董事长昨天不接待沃克，因为他是未经预约而来的。

Unpasteurized milk undergoes a predictable fourstep succession during spoilage.
未经巴氏杀菌的奶在变质期间经历了四步连续的过程。