一口的英文：
readily
flatly (deny)

参考例句：

To bite at a mouthful.
啖了一口。

a shot of whiskey
一口威士忌酒

A tot of whisky
一小杯(一口)威士忌

A bite had been taken out of my sandwich.
我的三明治给咬去了一口.

I could hear the harvard fans draw in their breath
我能听见那些哈佛球迷倒吸一口冷气。

One long swallow of the cold beverage cooled my sweating body.
我咕噜噜长长地吞下一口冰凉的可乐，冒汗的身体顿觉清爽无比。

He took a final puff at the clipped stub, and ground it out in practiced motions of the lifeless hand.
他把夹住的烟蒂吸了最后一口，然后用那只没生命的假手熟练地把他捻熄。

She spoke in a mild sweet voice with a British accent, faintly germanic in intonation
她用柔和悦耳的嗓音说一口带德国腔的英国口音。

Then, suddenly-as at a whiff of gardenias and cigars -- his heart twitched within him, and he was sorry.
后来，猛然间--就好像吸进一口栀子花香味和雪茄烟似的--他的心在里面扭了一下，他真的难受起来了。

A swallow of brandy
一口白兰地

readily是什么意思：
adv. 快捷地；乐意地；容易地

The problems are not readily soluble .
那些问题真的不易解决。

The cell is reversible and is readily recharged.
电池可逆，并容易重新充电。

Such fine particles suspend readily in water.
这种微粒极易悬浮在水中。

flatly是什么意思：
ad. 断然,毅然,直截了当

Don't splatter. Say it out flatly!
不要吱吱唔唔的，直接说出来吧！

a purblind oligarchy that flatly refused to see that history was condemning it to the dustbin(Jasper Griffin)
愚蠢的寡头政治拒绝看到历史正在把其扫入垃圾箱(贾斯珀·格里芬)

a purblind oligarchy that flatly refused to see that history was condemning it to the dustbin(bJasper Griffin)
愚蠢的寡头政治拒绝看到历史正在把其扫入垃圾箱(b贾斯珀·格里芬)

deny是什么意思：
v. 否定，否认；拒绝给予；节制；戒绝；不承认

To deny;contradict.
否认；反驳

do not deny that is a serious blow.
我不否认那是严重的一击。

He denied this to be the case.
他不承认情形是如此。