New words：

overturn /ˌoʊvərˈtɜːrn/ v.倾覆；翻倒；翻掉；推翻

Sample Sentences：

She overturned the bottle.
The boat overturned but didn't sank.
The vase overturned and crashed into pieces.
The building was overturned at the earthquake.

New words：

contour ['kɔntur] n. 轮廓；外形
coastline ['kəustlain] n. 海岸线

Sample Sentences：

The contour of that mountain looks like a dragon.
The road follows the natural contours of the coastline.
Some people in California were warned to avoid the coastline for 12 hours.

New words：

detour ['di:tuə]
v.绕道
n.弯路；绕行道

Sample Sentences：

Detour. Road under repair.
They made a detour to avoid the town center.
During the construction we had to take a detour.

New words：

tour [tʊr]
n.旅游；旅行；参观；游览；巡回演出
v.在…旅游；在…巡回演出（或做宣传广告等）

journey‌：常指长距离的旅行，通常是单程的陆路旅行，但有时也指水上或空中旅行。除了表示旅行、旅程外，还有历程、过程的意思。

travel‌：泛指旅行，不特指某次具体的旅行。通常指长途旅行，不强调旅行的目的地。在表示抽象意义的“旅行”时也使用travel。

tour‌：通常指周游、巡视，这种旅行距离可长可短，常带有根据一定的路线，旅途中有停留游览点，最后仍回到出发地，常用于观光、商业旅行等。例如，音乐会巡演可以称为tour。

trip‌：通常指短期的短程旅行，尤其是指暂时到外地办理业务或观光。

在实际语境中，tour、trip和travel的运用非常广泛。

例如，当说到“我们去欧洲旅游”时，如果是有组织、有计划且包含多个停留点的旅行，那么使用tour更为贴切。

如果说“我计划周末去郊外进行一次短途旅行”，那么使用trip更为恰当。

而如果描述一个人长期在外旅行、探险或工作，那么使用travel则更为合适。

Sample Sentences：

They're going on a world tour.
We are touring Italy for our holidays.
Many Americans tour by car in summer.
Mr. Adams made a tour around East Asia last year.
We saw so many places on the tour I can't remember them all.

New words：

canal [kə'næl] n. 运河；沟渠
oceangoing ['əuʃən.gəuiŋ] adj. 远洋航行的；远洋的
Suez Canal [ˈsuːɪz kəˈnæl] 苏伊士运河

Sample Sentences：

Coal used to be sent here by canal.
Many oceangoing ships are sailing on the canal.
The ship is sailing towards Europe through the Suez Canal.