例句：
It is important to keep in touch with the latest research.
及時掌握最新研究情況很重要。
Above all, keep in touch.
最要緊的是保持聯系。
They embraced and promised to keep in touch.
他們互相擁抱，許諾將保持聯系。
We're a tight group, so we do keep in touch.
我們關系很鐵，所以的確保持著聯系。
She's still keen to keep in touch
她仍舊很愿意保持聯系。