1. On your own, you won't survive.
on one's own: 独自的，独立的
eg.
I was never crazy on my own.
独自一人时我从不曾感受疯狂。
He solved the problem on his own rather than ask for help.
他独立解决了这个问题，而没有寻求他人的帮助。
2. Sloppy, underdressed
underdressed: 衣着过分单薄、朴素的
eg.
She was underdressed for the hiking trip and suffered hypothermia.
她徒步旅行时穿得有些单薄，因此感觉浑身发冷。
As for work attire, always dress a little nicer than expected, it's better than being underdressed.
在工作穿着方面，你穿得一定要比要求高一点点。
3. Immature, clumsy
clumsy: 笨拙的
eg.
Foreign policy has been brave but clumsy.
外交政策也是胆识有余，技巧不足。
How clumsy of me to break the vase!
我打碎了这个花瓶，我是有多笨！
4. Gullible, naive
gullible: 易受骗，轻信的
eg.
Many scams target gullible elderly people.
许多骗钱的目标，锁定易上当的老人。
The advertisement is aimed at gullible young women worried about their weight.
这则广告专门针对担心自己肥胖而易受骗的年轻女士。