to be dubious about something
对某事半信半疑

Tom was dubious as to whether to accept the offer.
汤姆对于是否接受这个提议感到怀疑。

I feel dubious of its accuracy.
我对于它得正确性感到怀疑。

As long as the IsraelPalestine issue is unsolved, his Palestinian population will inevitably be accused of a dubious dual allegiance.
另外，来历不明的廉价进口药物中可能也存这种成分。

Influence of Contact Pressure Distribution of Amphibious Tracklayer to Adhesive Force under NonLinear Cutting Model
非线性剪切模型下履带车辆接地比压分布对附着力的影响

They admitted the force of my argument but remained dubious.
他们承认我的论点有说服力，但依然持怀疑态度。

It adopts air propeller and has amphibious nature.
采用空气螺旋桨推进，具有水陆两栖性。

Adverse selection was not the only dubious practice.
逆向选择并非唯一可疑的操作。

Ready Afloat Marine Amphibious Brigade.
准备登船的陆战队两栖旅

amphibious African insectivorous mammal that resembles an otter.
非洲两栖食虫哺乳动物，与水獭类似。

The airborne units were to secure the flanks of the amphibious assault.
空降部队的任务是从侧翼掩护两栖进攻。

The U. S. doesnt have any aircraft carriers or bigdeck amphibious ships in the Mediterranean now.
美国目前在地中海没有部署航空母舰和大型两栖战舰。

Besides， the significance of the alleged changes of human nature is dubious， and very hard to assess.
其次，所谓人性变化的意义也不清楚，且难以确定。

You're dubious? fitzgerald observed amiably.
你有些半信半疑？费兹杰拉德亲切地问。

amphibious shovel.
两栖铲土机

amphibious dredger.
两栖挖泥船

amphibious truck.
水陆载重车

amphibious tractor.
水陆牵引车

amphibious vehicle.
水陆两栖车

amphibious hydrofoil.
两栖水翼艇

amphibious resupply barge.
登陆供应驳

amphibious armored car.
两柄突击车

amphibious site.
水陆建筑场地

amphibious warfare transport ship.
登陆运输舰

amphibious cargo ship
登陆物资运输舰