Pteropterin
[化] 蝶罗呤; 蝶酰二-γ-谷氨酰谷氨酸
🗣️ 情景例句
Sorry, I've got people coming over tonight.
很抱歉，今晚有客人要来。
When the police arrived, I was resting.
当警察来的时候，我在休息。
The men were now obliged to try once more.
工人们只得再来一次。