Petn
[医] 四硝酸戊赤藓醇[酯], 四硝酸戊四醇[酯], 长效硝酸甘油
🗣️ 情景例句
She says Carter Boswell is on the TV right now--
她说Carter Boswell现在正在电视上呢
My class went camping last summer.
去年夏天我们班去露营了。
A young English writer made the pertinent observation a year or two back
一两年前，一位年轻的英国作家发表了中肯的看法。