我的longtable与下一页第二列的内容重叠，而下一页第一列则被推到下一页结束后开始longtable。
这是我的表的代码：
\begin{center}
\begin{longtable}[t]{|l|c|l|}
\caption{Class distribution of the semantic entities in DUFFR dataset and baseline model classes mapping.} \label{table:mapping} \\
\hline \multicolumn{1}{|c|}{\textbf{Original Class}} & \multicolumn{1}{c|}{\textbf{Number of Samples}} & \multicolumn{1}{c|}{\textbf{Mapped to}} \\ \hline
\endfirsthead
\multicolumn{3}{c}%
{{\bfseries \tablename\ \thetable{} -- continued from previous page}} \\
\hline \multicolumn{1}{|c|}{\textbf{Original Class}} & \multicolumn{1}{c|}{\textbf{Number of Samples}} & \multicolumn{1}{c|}{\textbf{Mapped to}} \\ \hline
\endhead
\hline \multicolumn{3}{|r|}{{Continued on next page}} \\ \hline
\endfoot
\hline \hline
\endlastfoot
date & 699 & date \\
organization & 432 & organization \\
skill\_entry & 378 & entry \\
section\_title & 267 & section\_title \\
date\_range & 247 & date\_range \\
experience\_entry & 218 & entry \\
job\_title & 202 & job\_title \\
training\_title & 152 & name \\
experience\_description & 148 & description \\
training\_entry & 138 & entry \\
education\_certificate\_name & 89 & name \\
experience\_section & 82 & section \\
certificate\_name & 80 & name \\
achievement\_entry & 77 & entry \\
education\_entry & 74 & entry \\
certificate\_entry & 74 & entry \\
country & 71 & country \\
personal\_info\_section & 58 & section \\
phone\_num & 55 & phone\_num \\
language\_name & 55 & language\_name \\
language\_proficiency & 53 & language\_proficiency \\
personal\_other & 52 & details \\
language\_entry & 51 & entry \\
address & 48 & address \\
experience\_other & 45 & details \\
skills\_section & 45 & section \\
person\_name & 40 & person\_name \\
email & 38 & email \\
education\_section & 37 & section \\
datetime\_word & 36 & date \\
personal\_bio & 35 & description \\
training\_section & 31 & section \\
other & 27 & other \\
project\_title & 27 & name \\
training\_additional\_info & 25 & details \\
languages\_section & 24 & section \\
online\_presence\_link & 22 & online\_presence\_link \\
education\_field\_of\_study & 21 & education\_field\_of\_study \\
project\_description & 17 & description \\
education\_grade & 17 & education\_grade \\
personal\_image & 17 & personal\_image \\
education\_additional\_info & 12 & details \\
certificates\_section & 12 & section \\
education\_studied\_subjects & 9 & details \\
projects\_section & 7 & section \\
column & 6 & column \\
project\_entry & 5 & entry \\
language\_level\_justification & 3 & language\_level\_justification \\
attachment & 2 & attachment \\
achievement\_description & 1 & description \\
certificate\_additional\_info & 1 & details \\
project\_other & 1 & details \\
\end{longtable}
\end{center}