upon a first cough
第一次咳嗽时
以上为机器翻译结果，长、整句建议使用 人工翻译 。
Upon a first cough, however slight, I have given this syrup to my son since he was 3 years old. I feel it not only soothes his throat, it at times has nipped a full blown cold in the bud.
只要一有咳嗽，不管多轻微的，我都要给3岁的儿子吃这个糖浆，我感觉它不但能让喉咙舒服，也能马上将感冒制止。
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