Viburnitol
莢醇, L-櫟醇, 環(huán)已五醇
??? 情景例句
Are you sure? But ... OK.
你確定嗎？ 但……算了。
Friends are lost by calling often and calling seldom.
交往過(guò)密過(guò)疏，都會(huì)失去朋友。
That's OK.
別客氣。