Octane rating
[化] 辛烷值
🧩 词语组成解析
n. 辛烷\\n[化] 辛烷; 正辛烷; 辛烷; 辛级烷
rating
['retɪŋ]
n. 等级;评估，评价;极限;收听率，收视率;
v. 估价( rate的现在分词);定级;
rat =calculate 计算 + ing [名词后缀],构成抽象名词 → n. 等级,评定结果，收视(听)率
🗣️ 情景例句
What kind of performance are you looking for?
你要什么配置的机器。
What's your brother planning to do tomorrow?
你的兄弟计划明天做什么？
This is because they had no natural enemies until the arrival of humans and therefore did not need to develop flying wings.
这是因为人类到达这里之前，这些鸟没有天敌，因此，它们不需要发育飞行的翅膀。