如履薄冰

on thin ice; tread as on eggs; tread on eggs

1. 我们可以不理会他而直接去找主席，但那样做我们就如履薄冰了。
   We could ignore him and go direct to the chairman, but we'd be skating on very thin ice.
2. 他似乎很满意我对机器操作的叙述，可是我却如履薄冰，因为我自己对那机器实在了解不多。
   He seemed satisfied with my description of how the machine works, but I was skating on thin ice because I don't really know much about it myself.

如的英语翻译：

履的英语翻译：

薄的英语翻译：

冰的英语翻译：