tweak twtb 13

Signed-off-by: Jin Mingjian <jin.phd@gmail.com>

Author: jinmingjian

_thisweek/2021-07-28-tw_13.md

@@ -10,7 +10,7 @@ Welcome to "This Week in TensorBase" weekly newsletter.
 
 ## Experimental MacOS support, Partition Pruning Enhancement and Documents
 
-In this week, TensorBase has merged a PR for the experimental MacOS support from one new contributor. Now, it is OK to build and run TensorBase if you are using the MacOS. Currently we do not guarantee the performance on the MacOS, but it is still great for wider users coming into TensorBase community.
+In this week, TensorBase has merged a PR for the experimental MacOS support from one new contributor. Now, it is OK to build and run TensorBase in the MacOS operation system. Currently we do not guarantee the performance on the MacOS, but it is still great for wider users coming into TensorBase community.
 
 In this week, TensorBase continues to improve the static partition pruning. After the week's work, we basically support the human-writing partition condition pruning in constant parsing time. This once again shows the user thinking of TensorBase to make an industrial-level product. We will soon demonstrate the power of TensorBase's in overall TPC-H benchmarks.