Grammar Note
self 作动词时用于生物学或遗传学语境，主语常为植物或试验生物。
自体受精；自花授粉
先理解核心含义，再看它在真实句子里的用法。
自体受精；自花授粉
To fertilize by the same individual; to self-fertilize or self-pollinate.
To keep the strain stable, the researcher selfed the plants for three generations.
为了保持品系稳定，研究人员让这些植物自交了三个世代。
由同一个体受精；自体受精或自花授粉。
To fertilize by the same individual; to self-fertilize or self-pollinate.
由同一品系受精；近亲繁殖。
To fertilize by the same strain; to inbreed.
self
Base
原形
selfs
3rd person
第三人称单数
selfing
-ing
现在分词
selfed
Past
过去式
selfed
Past participle
过去分词
This variety selfs readily in warm conditions.
这个品种在温暖条件下容易自花授粉。
The botanist selfed the flowers to produce a pure line.
植物学家让这些花自花授粉以产生纯系。
These tomatoes have selfed without any intervention.
这些番茄在没有任何干预的情况下已经自花授粉。
规则动词：过去式和过去分词均为 selfed。
This variety of tomato will self even without wind or bees.
这种番茄品种即使没有风或蜜蜂也会自花授粉。
Selfing a crop can reduce its genetic diversity over time.
让作物自交会随着时间降低其遗传多样性。
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self 作动词时用于生物学或遗传学语境，主语常为植物或试验生物。
该词属于 Oxford 核心词汇，值得优先掌握常见搭配和句型。
Collins 词频等级为 3，建议结合例句记忆，而不是只背中文释义。
Dictionary facts from DICTIONARY_API_DEV, ECDICT, WIKTIONARY.