to enter; to come in; to join (a club, company, etc.); to enter (a university, the army, etc.); to be contained (in); to be included (in); to (be able to) fit (in a container, building, etc.)
Examples (5 in total)
風で砂がくちにはいった。
The wind blew sand into my mouth.
昔は砂糖がなかなかくちにはいらなかった。
In the old days, people rarely got to eat sugar.
こんな高い肉は、めったにくちにはいらない。
We rarely get to eat meat this expensive.
くちにはいった瞬間、彼は目を見開いて固まる。
The moment it enters his mouth, his eyes go wide and he freezes.
食べ物をくちにはいれる最も良い方法は何だろう。
What is the best way of getting food into the mouth?