Alkylene ether sulfide

alkylene

亚烃基, 烯化, 烷撑

ether ['i:θə]

n. <化>醚;the ether 苍穹;苍天;太空;

sulfide

n. 硫化物\\n[化] 硫化物

Then walk two blocks to the traffic light.

再走两条街到红绿灯处

A watched pot is long in boiling.

心急水不沸。

OK, everyone. Less noise, please! Gather round and listen carefully. First we are going to search the beach and the rock pools. Let me remind you what we are looking for: seaweeds, fish, plants, all living things. When you find anything, make a note where

00在这里集合，游泳之后再吃午餐。别着急！我们有足够的时间。