If all you need is a way to translate English to Chinese or vice versa, this is the best app Ive found. I still dont rely on it exclusively, but it is always my go to app when I dont want to sound like a complete moron. When I do want to sound like a complete moron, I use Google Translate.
GulliMan about 有道翻译官-107种语言翻译, v2.3.0