Bitusol
[机] 南美洲特里尼达产天然沥青
🗣️ 情景例句
It's tough getting an O.K. from the boss.
很难从老板那听到声“同意”。
Would you like to leave a message?
你想要留下口信吗？
Jim is writing. Lily isn't writing. She's looking at the blackboard.
吉姆在写字。莉莉没在写字。她在看黑板。