Trifluorothymidine
三氟胸苷
🗣️ 情景例句
and the problem is that it's set up primarily for kids to play.
而问题是它主要是让孩子们去玩的。
Step after step the ladder is ascended.
按部就班，循序渐进。
The train was traveling at 120 miles an hour.
火车时速一百二十英里。