接触这些化学物质可能对呼吸系统有问题的人有害。

Exposure to these chemicals can be ___harmful to individuals with respiratory issues.

与过度使用屏幕不同，阅读书籍通常对你的视力无害。

Unlike excessive screen time, reading books is generally not ___harmful to your eyesight.

吸烟被广泛认为对吸烟者和周围的人都 有害。

Smoking is widely recognized as ___harmful to both smokers and those around them.