Theophyline
n. [化]茶碱(用作利尿药、心脏兴奋药和平滑肌松弛药)
🗣️ 情景例句
Don't be lazy, the older you get, the harder it will be to learn.
别偷懒，年纪越大，学起来就越难。
Whatever is worth doing at all is worth doing well.
凡是值得做的事，就值得做好。
My shoe has been pressing against my foot, so it hurts a bit.
我的鞋一直挤着脚，所以脚有点疼。