1. 刚刚;才;勉强
    You use scarcely to emphasize that something is only just true or only just the case.

    e.g. He could scarcely breathe...
           他几乎喘不过气来。
    e.g. I scarcely knew him...
           我几乎不认识他。

2. 几乎不;简直不
    You can use scarcely to say that something is not true or is not the case, in a humorous or critical way.

scarcely的反义词

    e.g. It can scarcely be coincidence...
           它不太可能是巧合。
    e.g. Yesterday, however, his views seemed scarcely relevant...
           然而，昨天他的观点似乎毫无关联。

3. 刚…(就…)
    If you say scarcely had one thing happened when something else happened, you mean that the first event was followed immediately by the second.

    e.g. Scarcely had they left before soldiers arrived armed with rifles...
           他们刚离开，扛着步枪的士兵们就到了。
    e.g. Bruce had scarcely shaken our hands when the phone rang.
           布鲁斯刚和我们握了握手，电话就响了。