Packaging materials should be harmless to humans and organisms.

包装材料对人体和生物应无害无毒。

youdao

However, the sweet smelling substance is said to be harmless to people and animals.

据称这种气味香甜的物质对人类和动物无害。

youdao

NOTE: If your fountain may be visited by wildlife, use an algaecide that's specially formulated to be harmless to animals instead of bleach.

注意：如果你的水景会有动物光临，强烈推荐用专门配方的对动物无害的除藻剂，而不是用漂白剂。

youdao

However,the sweet smelling substance is said to be harmless to people and animals.

VOA: special.2011.02.23

So,I said to myself, it would be a simple, harmless act to help him as much as I could.

VOA: special.2010.03.27

So, I said to myself, it would be a simple, harmless act to help him, as much as I could.

VOA: special.2009.01.03

"A food protein can be perfectly harmless to one person and lethal to another, " he said.

BBC: NEWS | Health | Food allergy molecule discovered

The single-celled organisms appeared to be harmless, though we were cautioned not to touch anything, to keep the windows shut, to wash our hands.

NEWYORKER: The Invasion from Outer Space

If all such asteroids turn out to be harmless windmills, it will have been a wasted effort.

ECONOMIST: The American Association for the Advancement of Science