Butene
n. [化]丁烯
🗣️ 情景例句
What section is the car parked in? ?
车停在哪儿？
The lone sheep is in danger of the wolf.
孤独的羊难免遭狼的危险。
The body's tissues are self-repairing and self-restoring to a degree, and function best when more or less continuously active.
人体组织在一定程度上有自我修补和自我恢复的能力，有张有弛地连续活动时，其功能最佳。