*drop by, drop in, stop by
それぞれ同じような意味 "visit for a short period."
R&D
= Research and Development
expense sheet
[ 経費関連書類、伝票
knows everything about the company
#This is a very common phrase that people use when they areintroducing a new employee to the company and other workers. It'skind of an invitation to ask her if you have any kind of smalldetailed question or large questions as well. She is probably a good place to start even if she doesn't have the answer you are looking for. knows the company inside and out とも言えます。
get one's bearings
[ 自分の位置を確かめる
=to find out exactly where you are *He paused to get his bearings.(LDOCE)
*find one's bearingsでも使えます。
that's just a colloquial expression
[ ちょっとした口語表現ですよ
#It's tough for native speakers to try to speak more simply and directly. They just say what's in their heads. So in a case like this it's good Shiga asked "What do you mean bearings?" And Tyson was easily able to explain his meaning. Sometimes it's very tough because the idiomatic phrase is the correct phrase for the meaningthat you want.
*ネイティブは頭に浮かんだことをさっと言うけど、慣用句は説明すのは難しい。
stock up on
[ (在庫などを)仕入れる
=to buy a lot of something in order to keep it for when you need to use it later
go one step at a time
[ 少しずつ進む
*他にgo one step beyond ~の一歩先を進む go one step further さらに一歩進める
*air route 航空関係の用語として使われる場合「ラウト」が一般的
faculty
=a department or group of related departments within a university