to officially approve a trade deal or document
正式批准贸易协议或文件 (zhèngshì pīzhǔn màoyì xiéyì huò wénjiàn)
"Both leaders signed off on an agreement to strengthen bilateral trade."
"两位领导人签署了一份协议，以加强双边贸易。" (Liǎng wèi lǐngdǎo rén **qiānshǔle yī fèn xiéyì**, yǐ jiāqiáng shuāngbiān màoyì.)
to make progress or advance toward improvement
to increase optimism or trust in the economy
to start innovating in a new field or market
to make a loud sound, especially of bells or alarms
to explode with emotion such as laughter or tears
to progress further than a previous level or limitation
