The opening of this waterbottle is quite small, so it's hard to wash.
The spout on this thermos isn't very big, which makes it tricky to wash.
ーThe opening of this water bottle is quite small, so it's hard to wash.
「この水筒の口は結構小さくて、洗いにくい」
opening of this water bottle で「水筒の口」
hard to wash で「洗いにくい」
ーThe spout on this thermos isn't very big, which makes it tricky to wash.
「この魔法瓶の飲み口はあまり大きくないから洗いにくい」
spout on this thermos で「魔法瓶の飲み口」
tricky to wash で「洗いにくい」
ご参考まで！
カナダ 
