The phrase "the future is promising" can be used to express the idea of "未来可期" in English. It implies that there are positive expectations for what is to come and that opportunities and success may lie ahead. This phrase can be used to inspire hope and optimism for the future, and to encourage people to work towards their goals and aspirations. Overall, "the future is promising" captures the essence of "未来可期" and conveys a message of positivity and possibility.