“细微的”用英语怎么说

肺实际上由上千条细微的气管构成。The lungs are in fact constructed of thousands of tiny tubes.我们每时每刻都在发生细微的变化。We change subtly all the time.他认真地注视着她的脸，捕捉每一丝细微的表情变化。He watched her face intently to catch every nuance of expression....