Treeline
n. 树木生长线（按海拔标示的树木生长上限）
🗣️ 情景例句
10 percent down and the balance at the time of shipment?
百分之十付现款，余额在装运时付清吗？
The fire is the test of gold; adversity of strong man.
烈火试真金，困苦练壮士。
An all-night party on New Year's Eve provided me with a good excuse for not carrying out either of these new resolutions on the first day of the year,
新年除夕举办的一次通宵晚会，使我理直气壮地在新年头一天免去了这两项任务。