懈怠者 the apathetic

不懈努力 Unremitting efforts ; make unremitting efforts ; tireless efforts ; Their tireless efforts

坚持不懈 Perseverance ; Persistence ; persevere

松懈 Slacken ; take it easy ; relaxed

懈怠 Slack ; sluggish ; laches ; delay

坚持不懈的 persistent ; insistent ; indefatigable

松懈懒惰 slack ; sluggish

不懈追求完美 The relentless pursuit of perfection

无懈可击的 unexceptionable ; impeccable ; tenable

不懈的 unremitting ; untiring ; unremittent