be harmful to什么意思解释？

be harmful to的音标：be harmful to的英式发音音标为：[bi: 'hɑ:mfəl tu:]be harmful to的美式发音音标为：[bi 'hɑrmfəl tu]...

Radon is known to be harmful to humans in large quantities.众所周知，大量的氡会对人体造成伤害。Such chemicals taken up by plants can be harmful to humans and animals.这种化学物质被植物吸收上来,就可能对人畜产生危害.Generally speaking, natural obesity should not ...