3 against用法

An animal's fart can come via (通过) its anus (肌工门) if it has one, or its cloaca (泄殖腔) - a combined opening for urination (排尿) and defecation (排便). The gas release makes the orifice (开口) vibrate (振动) against an organism's (生物体的) sphincter (括约肌) muscles, creating a sound.

这里的against具体什么意思?倚靠吗?

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最佳答案 2025-02-01 00:11

摩擦。摩擦而产生振动。字词含义可以多查查英英字典。比如朗文有解释:

used to say that something touches, hits, or rubs a surface

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  • 张小豆   提出于 2024-11-03 22:43