Argentina declared war on beavers | DW News
https://www.youtube.com/watch?v=yJjaQExOPPY 0:32 felling trees with your teeth takes great strength, skill and patience.立木をかじり倒すには相当な体力、技術そして根気が必要だ。
How Beavers Build Dams | Leave it to Beavers | PBS
https://www.youtube.com/watch?v=EzCImKVS7Qk 18:57 thousands of years people of Japan have felled trees and made use of the timber.
[Begin Japanology] Season 4 EP08 : Sashimono Woodwork 木工 2011 03 10
https://www.youtube.com/watch?v=CDZ01iPf1-s 8:55 so in the 1950s huge numbers of Japanese cedars were felled and new ones were planted on an unprecedented scale. 沢山の杉が伐採され、そして前例のない規模の植樹が行われた。
[Begin Japanology] Season 4 EP07 : Pollen Allergy 2011-03-03
練習問題解答
a-5262 big name to be felled
b-2602 was felled
b-5112 were felled
b-6627 were felled