?? 詞語組成解析
vt. 層層排列, 使層疊（tier的過去式與過去分詞形式）
seat
[sit]
n. 席位，座位;所在地;場所;臀部;
vt. 使就座;使就職;使獲得座位（或席位）;可容納若干座位;
??? 情景例句
That's a great idea.
真是個好主意。
I think it's going to be too cold.
我認為天氣將會太冷。
Often a valley boasted no inn at all, and climbers found shelter wherever they could --
山谷里常常沒有小客棧，登山者只好隨遇而安。