极度热情的（形容词）

(adjective) Intensely eager; zealous; burning with enthusiasm.

EXAMPLE: Our perfervid sales representatives convinced even the most skeptical customers to try our products.

我们极度热情的销售代表甚至说服了最为怀疑的客户试用我们的产品。

突然出现（非正式）

(INFORMAL) To occur suddenly and unexpectedly. (Note: often describing the appearance of problems).

EXAMPLE: My new house looked fine until it started raining yesterday and a dozen leaks in its roof cropped up.

我的新房子看上去一直挺好，直到昨天开始下雨，屋顶突然出现了十几道裂缝。