1. To express the idea of "去旅行用英语怎么说," you can say "traveling" or "going on a trip."

2. Traveling is a great way to learn about different cultures, try new foods, and create unforgettable memories. It can also be a source of relaxation and adventure.

3. When planning a trip, it's important to consider your budget, destination, and types of activities you want to do. Researching ahead of time can help you save money, avoid tourist traps, and make the most of your experience.

4. There are many options for traveling, including solo trips, group tours, and backpacking. Each has its own pros and cons, so it's important to choose the one that best fits your preferences and travel style.

5. Some common phrases you might use when discussing travel include "book a flight," "reserve a hotel room," "pack your bags," and "explore a new city."

6. In conclusion, "去旅行用英语怎么说" can be translated as "traveling" or "going on a trip." Whatever your destination or travel style may be, the experience of exploring new places and cultures is always worth it.