Dubiousness
n. dubious（令人怀疑的）的变形
✅ 同义词
🔴 反义词
🗣️ 情景例句
And you promised me a surprise.
而且你答应给我一个惊喜。
The only cure for grief is action.
行动是对悲痛唯一的治疗。
and we have only to turn to that extraordinary discovery of echo-location in bats to see a case in which the voice plays a strictly utilitarian role.
我们只要看一看蝙蝠回声定位这一极不寻常的发现，就可以探究一下声音在什么情况下有绝对的实用价值。