twice yearly的用法和样例：
例句
- The writers, often parents or working people, exchange letters with their teachers regularly, and then come in to Bennington for a few days twice a year.
哪里的作家一般都是身为父母或是已经工作的人，他们定期与他们的教师通信，而且一年两次他们来到本宁顿呆一段日子。 - As part of the effort to strengthen consultation, the Chinese foreign minister and the British foreign secretary will meet twice a year to discuss issues of common concern.
作为加强磋商努力的一部分，中国外交部长和英国外交秘书将在共同关注的问题上举行一年两次的会晤进行讨论。
