If something is corrugated, it has been shaped into regular waves or folds, usually to make it stronger without making it much heavier. The ridges stand up like a row of small hills.

If something is corrugated如果某樣東西是 corrugated（瓦楞狀）的，it has been shaped into regular waves or folds就是被做成規律的波浪或摺痕，usually to make it stronger通常是為了讓它更堅固，without making it much heavier卻不會讓它重很多。 The ridges那些凸起的稜線 stand up like a row of small hills立起來，就像一排小山丘。

You see it in corrugated cardboard — the wavy paper in the middle of a box — and in corrugated iron or steel, the ridged metal sheets used on roofs and sheds. Those sheets are often dull and rusty in old buildings, so students sometimes think corrugated means “old metal,” but the word is only about the wavy shape.

You see it你會看到它，in corrugated cardboard出現在 corrugated cardboard（瓦楞紙板）——the wavy paper in the middle of a box也就是紙箱中間那層波浪狀的紙——and in corrugated iron or steel也出現在 corrugated iron or steel（浪板鐵皮或鋼板）上，the ridged metal sheets used on roofs and sheds就是用在屋頂和小屋上、有稜線的金屬板。 Those sheets這些板子 are often dull and rusty in old buildings在老舊建築裡常常又暗又生鏽，so students sometimes think corrugated means “old metal,”所以學生有時候會以為 corrugated 是「老舊金屬」的意思，but the word is only about the wavy shape但這個字其實只是在講那種波浪形狀。

Plastic, paper, and even some fabrics can be corrugated too. It is an ordinary descriptive word, a little technical, not fancy.

Plastic, paper, and even some fabrics塑膠、紙，甚至有些布料，can be corrugated too也可以是 corrugated（瓦楞狀）的。 It is an ordinary descriptive word這是一個普通的描述性字詞，a little technical有點技術性，not fancy但不花俏。

The verb behind it is corrugate, “to wrinkle or fold into ridges,” though the -ed form is the one you will hear most.

The verb behind it這個字背後的動詞 is corrugate是 corrugate，“to wrinkle or fold into ridges,”意思是「起皺摺、摺成稜線」，though the -ed form is the one you will hear most不過你最常聽到的還是 -ed 形式。