The adviser checks the figures once in a while to catch unusual changes.
这位顾问会时不时核对这些数字，以便发现异常变化。
来源：Expression Original Learning Examples — 阅读必备库 — batch19 · Expression Editorial Team段 editorial-base-once-in-a-whileOriginal English example and Chinese translation written for Expression; no third-party sentence text is reproduced.
They come once in a while, but I don't really have anything real strong.
