并且，早熟株的弱毒性和早熟性具有遗传稳定性，通过放松选择压力反复传代后无恢复现象。
The characteristics of the precocious strain is genetically stable and can't reinstate by relaxing the selection pressures.
狼蛛毒液的毒性比蜜蜂的都弱。
然而SFN的药性要比其他提取自植物的药物的药性要弱得多，因此毒性也要比它们小得多。
However SFN is much weaker than these other plant-based drugs, and thus much less toxic.
狼蛛毒液的毒性比蜜蜂的都弱，被它咬一口尽管很疼，但事实上对人体无害。
Tarantula venom is weaker than that of a honeybee and, though painful, is virtually harmless to humans.
该型消毒剂急性经口毒性为实际无毒级，对小鼠骨髓嗜多染红细胞无致微核作用，弱蓄积性。
It was actually nontoxic by acute oral toxicity test, did not cause micronucleus formation in mouse bone marrow polychromatic erythrocytes and had weak cumulative effect.
例如，农人要是种植了耐除草剂的大豆，就会避免使用最毒的杀草剂，而改用毒性弱、分解快的苷磷除草剂。
For instance, those who grow herbicide-tolerant soybeans typically avoid the most noxious weed killer, turning instead to glyphosate herbicides, which are less toxic and degrade more quickly.
地铁里的空气污染应该比街道的毒性弱。
Air pollution on underground trains tend to be less toxic than that at street level.
该消毒剂属于实际无毒，弱蓄积毒性，对动物皮肤无明显刺激性。
This disinfectant belongs to practically nontoxic substance with weak cumulative toxicity and has no obvious irritating effect on animal skin.
结论纳米级水镁石纤维粉尘具有明显的细胞毒性，其细胞毒作用较普通水镁石纤维粉尘强，较石英粉尘弱。
Conclusion The cytotoxicity of millimicron brucite fiber was obviously stronger than common brucite fiber, but much weaker than quartz dust.
然而，与那些植物源抗癌药物相比，SFN的“威力”要弱得多，因此毒性也小得多。
However SFN is much weaker than these other plant-based drugs, and thus much less toxic.
混合物的毒性比纯氟弱。
混合物的毒性比纯氟弱。
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