Paramutualism
兼性互惠共生
🗣️ 情景例句
From the baby!
是胎儿引起的。
When you compare the prices,you must take everything into consideration.
当你在考虑对比价格时，首先必须把一切都要考虑进去。
How it came about that snakes manufactured poison is a mystery.
蛇是怎样产生毒液的，这是一个谜。