Langley
[化] 兰勒(太阳辐射或织物、塑料耐晒牢度试验的能通量单位)
🗣️ 情景例句
It's tough getting an O.K. from the boss.
很难从老板那听到声“同意”。
The evil wound is cured but not the evil name.
重伤可治，臭名难除。
the varieties are infinite; but two classes may be roughly seen.
鸟的飞行方式千差万别，但大体上可分为两类。