1.
The risorius and the buccinator muscles assist in the retraction of the lips, as well as support entrapment of air within the oral cavity.
笑肌和颊肌帮助唇的收缩，也支撑了整个口腔的气体流通。
2.
Wu Sun-fu's face twitched in what could have been a smile.
吴荪甫脸上的肌肉似笑非笑地动了一下。
3.
It take17 muscles to smiles,43 muscles to frown.
微笑需要牵动17块肌肉，皱眉需要牵动43块肌肉。
4.
When he laughed, his cheek muscles pulled his nostrils out even larger.
笑得两颊肌肉把鼻孔牵得更大了。
5.
His smile soon modified to a wince.
他的微笑很快就成了脸部肌肉的抽搐。
6.
Many women can smile just as sweetly, but their smile is only facial muscle calisthenics, as if a drill master were barking the order, "One!"
许多女人会笑得这样甜，但她们的笑容只是面部肌肉柔软操，仿佛有教练在喊口令：“一
7.
The grin was still there, even the long, lean body with the good muscles.
那笑容宛在,就是那修长、肌肉结实的身材也依然如故。
8.
But it is unlikely that it will ever kill you.
你如果笑得太厉害，会感到剧痛，那是你得膈肌收缩得结果。
9.
He assures me that the knack is to flex the muscles on the side of your cheeks, hard.
他断言，真心微笑的诀窍就是`用劲收缩脸颊两侧的肌肉。
10.
Study on the Protective Mechanism of Jiawei Shixiaosan in Ischemia-reperfusion Injury of Myocardiat of Rabbits
加味失笑散对家兔心肌缺血再灌注损伤保护作用机制的研究
11.
And they mean it: they smile with their eyes( a contraction of the orbicularis oculi facial muscles), not just their mouths.
这意味着：他们用眼睛微笑（部上睑提肌肌肉的收缩）而不仅仅是他们的嘴。
12.
And they mean it: they smile with their eyes (a contraction of the orbicularis oculi facial muscles), not just their mouths.
这意味着：他们用眼睛微笑（面部上睑提肌肌肉的收缩），而不仅仅是他们的嘴。
13.
Laugh, koo-ka-bur-ra, laugh,
笑吧，笑翠鸟，笑吧，
14.
give, let out, break into, utter, etc a laugh
笑、 笑起来、 突然笑、 一笑
15.
It makes your skin feel soft and comfortable, which likes the sunny from the spring.
天然靛青在蓝夹缬被面释放出阳光般的春暖让你的肌肤绽放幸福的微笑。
16.
Muscle tension decreases, and indeed we may temporarily lose control of our limbs, as in the expression "weak with laughter".
肌肉张力减小，实际上我们可能会暂时失去对四肢的控制，正如俗话中所说的“笑得没了气力”。
17.
a happy [silly] grin
开怀的笑 [傻笑]
18.
amuse people enough to make them laugh/smile
逗得人大笑[发笑]