音标 英式美式相同 /ˈsketʃ.i/

1. 表示信号不稳定（常见用法）：

sketchy cell service指的是：信号不稳定 / 覆盖不佳的移动网络服务

The cell service is pretty sketchy up in the mountains.
山区的手机信号很不稳定。

Wi-Fi at the café is sketchy — sometimes it works, sometimes it doesn’t.
咖啡店的Wi-Fi不太稳定，有时能用，有时用不了。

Excellent product. Works great in an area with sketchy cell service from one of the major providers. Easy setup; app download and activation were very simple.
非常优秀的产品。在某主流运营商信号不稳定的地区也能很好地运行。安装简单，应用程序的下载和激活过程也非常容易。

2. 表示人或行为可疑、靠不住：

That guy hanging around the parking lot looks kind of sketchy.
停车场附近那个家伙看起来有点可疑。

She gave me some sketchy excuse for not showing up.
她给的缺席理由听起来挺可疑的。

3. 表示信息不完整或不明确：

The details of the plan are still sketchy at this point.
目前这个计划的细节还不清楚。

So far we only have sketchy information about what caused the explosion.
迄今为止，我们仅仅掌握了关于爆炸起因的大概信息。