Seesaws
n. 蹺蹺板, 上下動( seesaw的名詞復數 )\\nv. 使上下（來回）搖動( seesaw的第三人稱單數 ); 玩蹺蹺板, 上下（來回）搖動
??? 情景例句
I guess we must.
我想咱們是該開始了。
This is the most fully-automated factory we have.
這是我們的全自動化工廠。
Few things could be more impressive than the peace that descends on deserted city streets at weekends when the thousands that travel to work every day are tucked away in their homes in the country.
周末，當成千上萬進城上班的人回到他們的鄉間寓所之后，空曠的街市籠罩著一種寧靜氣氛，沒有什么能比此時的寧靜更令人難忘了。