文字大小调节
字体颜色调节
阅读背景调节
文字大小调节
字体颜色调节
阅读背景调节
关灯
护眼
第四章 I said the calculation (3/3)
CUUG6Y2t9Yfe83iGqyKO9l749ejR6LSmsJ@@6YqFqYOo6znu6v3T7iS09f2a8Yr79Y70qynz9KT76wj88gqa85786zSZqIjj743jsgWA8iCC9zyZ6ySn707lsLnfsezP82Wv8iXC9k338KXStK7y95bL9NKj9j#dsYqg6LyxtJ749YKb7gr4853R9g6o833y9IOitYb895206wj87ga085756jbzt4r385f4sfCZ7iWI9I6H953h9fnqtKnhshfk7lnm8iX4CRcDDa8uFQ@RgjmRlMLWgZPW5ZSDjibG0LNL6LjX9w7j8zfv9wHE8Lnl95vttj3c9Ka39vz29OP58krh6I3TqIWq74z7r#Ky8lGE93@s6ZnJ9#OLt4SrsPfu6KKM6JuP92bv8k2xrl7@9lfL9#306KCLsYqt6KXdqKSw9LbL9Nr88kS39vi78KC#9Kv0siS6CRhRDGdFQo7Hh3mTo3@z7LTRh3aT7#2Vr2ySp3vKrLmxq#XW6jXU@hDXqKivf3WAq2XytySK1kmWhliyrvmWgzmR15ODrYOG6ZXRqyLQqeLRr2PZtgSNsIPQgyiR6LaRq2KOqemwrf3At5TTlJeT#LaUhYqR3P2XliHQkKKKrKiTePDW6ZXz6PaWhJqxqJ#Aq5mysIvG5leWfI2RswTQqyqS3jnAjLWH62XzrzuRpeuQmjiWivvBqJPvnlDz7yqRrJSHjhmwrf3Dj4iSkL@Q2IXzrKDS2PHUeKLTjLbCglaThv6w7jyU@#aXqiXxqy7Ni56ynyvH6LiziKXyruiWgztITpJYMd5TW0G8jw3Pi5fJhgW4klX4fNvNgwCM2wKdfwP2glnFiYHoigCYlwCPdg7Dl0nVbI7OjgCKgNDVhgOGlYWK4g#N55jPfwGBj0P1ngWfoNLk80S6rwGOh5jIfwGP00uyjgT990zFsNCDkIG0t0WCs5T9i0zGlw7lc0G1fNewelOFplyjpNGLs07900jPe0O6@5GMp0OksNiZfFNzWA8wEUcBqNn@QVkuUUEMUEHxqyhECpVx95bL9NKj7ln5s3il6jevtK#F9KGC90CO6I#f8vP5DRcGCa5JFQiRqjKJqu@wr0KBr2yQeZ@S83iUjyXuaPqvq2iTs5WCkzeQsPXz5ZPU#1iWkZmxqLrChiHxqyfF2LHXqZDSsgXTkKeR9zzDsKGG3IDwrJTxrfPQo5uUfwrKqy@RlZaR6yTSpinDheiut#GCqI2wo3XX4KqUjyXQ@0mWojqSjL3AkKTRqfuy6y6W7@mVjJDygLwYGpMNOdhTW0OajgGJoYKjhNGP00uur0u2@gbJjgj9jICIgwzxiluuo0fGkwOv2g7xnwHfflKFrlXhfNO@hgKG8NKriwSH05Kig03cqNPisNGPhlSk#N#ecljPfw7QgNaokgbPewXq#wSqngO1kIKfhwCE9NiHgwyZ50bJfXFHVA8RR8gUVli4t80XQV8zC0fJgNysi8lWQo8eD9UL6lvFt3Sg8lGqsPn385ba93mf9Zrh9uKXrYW#s0309JjB9jPw9jn67ZyLt2K793v56xjZ95WtsYiL6JuvtY#J93C39e7I85n690qo8Yj#7lr4tiCD9KTe8vSA8gmq8LvM6ZCBr5n@8jjks0#68inQ9I6I9z3I6M3erYWltvWe9JCF9zXD8iOc92u#WR4DCD1IRVexgymR4ISCtjSG5kPRq5LxpfXSfYXvr##BrKaQs4XQdz2wnlCFrvywr#fKq2mTo3HSa3iyqKqV5@mXsIHQhyzDiKixivTy1ZHQ5@qViZiwf2nMszPymlOH62uUnKLRiu2yrz2R42#OfyvB4ZXXgZ2wqfDRr3@XjhzNmluTr3PR6KeQnl7OqfiwruWBrJmws36Q54XXrYeY6#mXi4iwqk3BqziTfNeX7jaW7w@Vsk6vhLjAq2XQhyVuSpENPAoEC5CEsN7L#NTGqg6u3wWYpw#sm5bKjgvJg5eEewzanNCP60fJfwLkllKDgIuwh07UgNCN40GJrwK65VpvQdt@CEVy9znw91CxqkvWs0#895zI93T39IOm8Y21tY7k64#o6MbY9KW3ql2j6Y29tYnP9YzL9##B85n69f@x8IKH6YCJtjGh9Yaj8ub071iJ8I3h6I#qr5n@8LWBseW@85rK9zX993r89wrNt53hsN3U9l3V6Ii@9Lbr8Y6osiGcCskECd$$