1.Please accept our sincere apologies.请接受我们真诚的道歉。

2.Sincere performances and gritty Boston settings add to the film's realism.真诚的表演和对波士顿这一背景城市的真实刻画增添了电影的现实主义色彩。

3.Please accept our sincere thanks.请接受我们诚挚的谢意。

1/sincere释义：

adj. 真诚的；诚挚的；真实的

2/sincere的用法例句是：

On behalf of the whole family, I offer my sincere apology to you.

我代表全家表达对您真诚的歉意。

The sincere man made a serious promise to his wife.

这名诚实的男子郑重地向他的妻子许诺。