彼は観察が鋭いがとても無口だ。の英語

His observation is sharp, but says very little.

His observation is sharp, but he says very little.

His observations are sharp, but he doesn't say much.

He is really nice, but he is a very quick tempered person.

He looks blunt, but he is very delicate at heart.

He is reticent but kind.

He seems rough, but at heart he is very gentle.

He is reticent but has solid ideas.

He hardly speaks but he's kind.

He is careless about appearance.

His rough appearance belies a gentle nature.

He looks craggy, but he's a pussycat.

He looks stern, but actually he's very kind.

His bark is worse than his bite.

Though he looks kind, he is malicious.

He is clever, no doubt, but he is cold, too.

He looks bad-tempered, but he is kind at heart.

He has a rough manner, but is, at bottom' a good fellow.

He looks dumb but he's very quick on the uptake.

he had coarse manners but a first-rate mind

He is very clever and is not proud either.

He's intelligent and also very gentle.

He looks very kind, but he is unpleasant.

He looks strong, but it is a mere show―but his looks belie him.

True, he likes to show off, but he is kind and generous.

He is unrefined but not vulgar [crude].

He has a rough tongue but is [has] a gentle nature.

He is strict, but he is kind.

He looks stern, but actually he's very kind.

He is extremely pessimistic and has no aspirations.