has yet to
has long been unable to
has been slow to

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Open the tool →迟迟未能 (chí chí wèi néng) means “has yet to, has long been unable to, has been slow to”.
迟迟未能 is pronounced chí chí wèi néng in Mandarin Chinese.
“has yet to” is 迟迟未能 (chí chí wèi néng) in Chinese.