1·A smile costs nothing, but gives much, so always keep smiling!
微笑不需要花费什么，却能给予很多，所以永远保持微笑！
2·I do know how upset the shop staff can get, but I try to persuade them to keep smiling.
我知道店员会有多生气，但我努力说服他们保持微笑。
3·I didn't mean to keep smiling.
我不是刻意地保持微笑。
4·Didn't mean to keep smiling.
我不是刻意地保持微笑。
5·Must adhere.! Keep smiling!
要坚持喔。！保持微笑！
6·They always keep smiling to anyone.
他们对谁都是笑盈盈的。
7·Keep smiling! Things will calm down.
乐观一点，事情会平息下来的。
8·Keep smiling. You can always count on me!
保持微笑，我永远值得你信任。
9·Just follow your heart, and keep smiling.
跟随你的心，保持微笑。
10·Baby's heart hurts but baby has to keep smiling.
宝宝心里苦，可还是要保持微笑。