1.so as not to 以免；唯恐
He sat in the front row, with his mouth half open, his head thrust forward so as not to miss any word.
他坐在前排，半张着嘴，伸长脖子惟恐听漏一字xqwIjszQS#!sk。

2.push hard for sth. 努力推动
France pushed hard for international action to curb green house gas emissions.
法国努力推动国际社会采取行动，控制温室气体排放^hgWOgHQg!。

3.leave sth. in place 保留
You can remove it at this point, or you can leave it in place for possible future use.
当下你可以删除，也可以保留下来供日后使用v7SSE;7%uO5W4Uv&C。

4.at the invitaiton of 应……的邀请
He gave the concert at the invitation of the British Council.
他应英国文化协会之邀举办了这场音乐会8HJoYm+=#JbKkHQ_fb。