对口的英文：
contra-aperture

参考例句：

counterpart talks;Talks between counterparts
对口会议

There is an active demand for interpreters during the trade fair .
在贸易洽谈会期间，对口译员需求很大。

An oral offer must be accepted immediately unless the circumstances indicate otherwise.
对口头发盘必须立即接受，但情况有别者不在此限。

contra是什么意思：
n. 反对,相反
ad. 反对地,相反地

The female is generally drab, the male per contra brilliant.
一般来说雌性是黄褐色的，而雄性是色彩鲜明的。

The Allowance for Doubtful Accounts often is described as a contra-asset account.
坏账准备是一个资产对冲账户。

Accumulated Depletion is a contra-asset account similar to the Accumulated Depreciation account
累计损耗是一个资产对冲账户,与累计折旧类似。

The contra-indications listed for the pills meant that she could not take them.
这种药丸所列的禁忌症表明,她不能服用.

Mr.Webster, seeking to address each of the criticisms leveled against the agency(CIA)during the Iran - contra affair, also said he had in place new rules to assure candid testimony to Congress, untainted analysis and regular review of covert actions.
为了答复因伊朗军售及援助尼加拉瓜叛军所引起的每一项批评，韦伯斯特先生又说：他已具备新法规以确保对国会证词坦诚，情报分析公正，并定期检讨秘密行动。

aperture是什么意思：
n. 孔，缝隙，空隙

The aperture will be set to the aperture opening you have selected and you can confirm the areas that are focused.
光圈将被调整到你已选择的光圈大小。你可以核准对焦区域。

Either of the margins of the aperture of a gastropod shell.
腹足纲软体动物缺口的两个边缘中的任一个

To peer through a small aperture or from behind something.
偷窥透过细缝或从某物后面偷偷地看

If the aperture is set to
如果光圈要调到“P”或 “A”,请按住“P”或 “A”锁定拴同时转动光圈环。

Set the lens aperture to the aperture value designated by the flash unit according to the ISO setting your camera.
按照您相机上闪光装置ISO设置,设置好镜头的光圈大小。