A true friend is invaluable and precious.
本当の友達は計り知れないほど貴重で大切な存在です。 (Hontō no tomodachi wa hakarishirenai hodo kichō de taisetsuna sonzai desu.)
"I've known her for years, and she's always been there for me; a friend is a treasure."
"彼女とは長い付き合いで、いつも私のそばにいてくれました; 友達は宝物です。" (Kanojo to wa nagai tsukiai de, itsumo watashi no soba ni ite kuremashita; **tomodachi wa takaramono desu**.)
to express yourself so that others understand you easily
the complete truth without leaving anything out
to say something without thinking carefully or checking
a well-established and financially sound company
to be so worried or stressed that you don’t know what to do
very happy and cheerful