Dumbbell
[ ['dʌmˌbel] ]
出国 Abroad
n. 哑铃\\n[医] 哑铃
✅ 同义词
🗣️ 情景例句
Just make the few changes I suggested and your letter will be perfect!
只要改动我提到的个别地方，你的信就会很完美了。
He hears the violin squeaking.
他听到了小提琴发出的声音。
a wave length (the horizontal distance between two wave crests),
波长（两个浪峰间的水平距离）