13. Do bear in mind, though, that many stomach upsets are largely preventable by following good personal hygiene¹ practice and taking care of what you eat and drink.
 
14. Put together a comprehensive first aid kit² to take with you and make sure it is tailored to the environments in which you are going to be travelling. That way you will know exactly what's in it and where to find each item.
 
15. If a doctor prescribes medication, be sure to take the full course. Some medicines require that you continue to take them even after returning home. Make sure you do this. A lot of people think that, simply because they are home, they are safe. This is not the case.
 
16. If you become ill once home, make sure that you tell your doctor you have been overseas and list the countries and regions you have visited, even if your illness develops months after your return.
 
17. When you first arrive at your hotel, be sure to keep your luggage with you at all times; don't rely on hotel staff to keep it safe. Many people have their luggage stolen when checking in or checking out of their hotel.
 
18. Keep your wits about you and watch out for people standing³ too close or who appear to be listening in on your conversations. They might be trying to find out which room you are in and whether you are travelling alone. If they see you later on in the restaurant or by the pool, they will know your room is unoccupied.
 
19. Never accept a room on the ground floor, as these are the easiest for criminals from outside to break into.
 
20. Elevators can be dangerous places, particularly for women on their own. If a suspicious-looking character gets in, leave the elevator as soon as possible.
 
21. Where possible, select a hotel that has installed electronic locks. Old-fashioned metal keys are usually hung up behind the reception desk, so if a criminal wants to see who is in and who is out, they only have to look behind the desk.
 
22. As soon as you check in to your room, test that the door lock and the deadlock⁴ are working. If they're not, ask for a new room. Whenever you are inside your hotel room, make sure you use the deadlock. It is also worth investing in a device that jams the door. This can be a simple door wedge inserted on your side of the door, or something more elaborate, such as a door jammer.
 
23. Check that your room has a peep hole so that, if anyone knocks, you can see who's there. If you are unsure whether the person at the door is legitimate⁵, call reception and ask them to confirm that your caller is genuine. Tell the person at the door what you're doing: if they are genuine they will understand; if not they are likely to leave before security arrives.



  

1 hygiene
n.健康法，卫生学 （a.hygienic）
参考例句：
Their course of study includes elementary hygiene and medical theory.他们的课程包括基础卫生学和医疗知识。 He's going to give us a lecture on public hygiene.他要给我们作关于公共卫生方面的报告。

2 kit
n.用具包，成套工具；随身携带物
参考例句：
The kit consisted of about twenty cosmetic items.整套工具包括大约20种化妆用品。 The captain wants to inspect your kit.船长想检查你的行装。

3 standing
n.持续，地位；adj.永久的，不动的，直立的，不流动的
参考例句：
After the earthquake only a few houses were left standing.地震过后只有几幢房屋还立着。 They're standing out against any change in the law.他们坚决反对对法律做任何修改。

4 deadlock
n.僵局，僵持
参考例句：
The negotiations reached a deadlock after two hours.两小时后，谈判陷入了僵局。 The employers and strikers are at a deadlock over the wage.雇主和罢工者在工资问题上相持不下。

5 legitimate
adj.合法的，合理的，合乎逻辑的；v.使合法
参考例句：
Sickness is a legitimate reason for asking for leave.生病是请假的一个正当的理由。 That's a perfectly legitimate fear.怀有这种恐惧完全在情理之中。