顺口的英文：
read smoothly; say offhandedly

参考例句：

Speak [select] at random
顺口胡说[随便挑选]

Whistle a catchy tune
用口哨吹一支很顺口的曲子

The hackneyed phrase came unintended to his lips.
他顺口说了这句老掉牙的套话。

The child stumbled over [ at] the long word.
对长的字那小孩说得不顺口。

This one, falling so pat, like a wayside omen, to arrest me ere I carried out my purpose, took the pith out of my legs
这些骂得那么顺口的恶咒好象是一个凶兆，在我还没有来得及达到目的以前就把我镇摄住了，夺去了我两条腿的力气。

read是什么意思：
v. 读；看懂，理解；学习；读起来
n. 阅读；读物

She goes to the reading room read pictorials and mag
三点她去阅览室看画报和杂志。

Please mark item displayed in reading pane as read.
请在阅读窗格中显示的邮件标记为“已读”。

He finds pleasure in reading.
他从阅读中得到乐趣。

smoothly是什么意思：
adv. 平稳地，流畅的；顺利地；平滑地

Everything went pretty smoothly.
一切进展相当顺利。

The gears work smoothly.
这个传动装置运转很灵活。

The operation was moving along smoothly.
手术进展顺利。

say是什么意思：
v. 说，讲；讲述，说明；表明；认为，声称
n. 要说的话，意见

To say this is worthwhile.||It is worthwhile to say this.
这话值得说。

He popped in to say hello.
他匆匆进来说声你好。

As they say, honesty is the best policy.
常言道，诚实是最佳策略。